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55132488 = 233485081
BaseRepresentation
bin1101001001010…
…0000101001000
310211202000120000
43102110011020
5103103214423
65245403000
71236422055
oct322240510
9124660500
1055132488
1129136944
1216569460
13b564598
14747202c
154c90843
hex3494148

55132488 has 40 divisors (see below), whose sum is σ = 154423830. Its totient is φ = 18377280.

The previous prime is 55132487. The next prime is 55132489. The reversal of 55132488 is 88423155.

It is a happy number.

55132488 is a `hidden beast` number, since 551 + 3 + 24 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (55132487) and next prime (55132489).

It can be written as a sum of positive squares in only one way, i.e., 31337604 + 23794884 = 5598^2 + 4878^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55132487) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41893 + ... + 43188.

Almost surely, 255132488 is an apocalyptic number.

It is an amenable number.

55132488 is an abundant number, since it is smaller than the sum of its proper divisors (99291342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55132488 is a wasteful number, since it uses less digits than its factorization.

55132488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85099 (or 85086 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 55132488 is about 7425.1254534856. The cubic root of 55132488 is about 380.6003621607.

It can be divided in two parts, 5513 and 2488, that added together give a triangular number (8001 = T126).

The spelling of 55132488 in words is "fifty-five million, one hundred thirty-two thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 85081 170162 255243 340324 510486 680648 765729 1020972 1531458 2041944 2297187 3062916 4594374 6125832 6891561 9188748 13783122 18377496 27566244 55132488