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55085653 = 721124197
BaseRepresentation
bin1101001000100…
…0101001010101
310211122122022101
43102020221111
5103100220103
65244402101
71236135400
oct322105125
9124578271
1055085653
1129104737
1216546331
13b54917c
14745cd37
154c81a1d
hex3488a55

55085653 has 6 divisors (see below), whose sum is σ = 64079286. Its totient is φ = 47216232.

The previous prime is 55085651. The next prime is 55085659. The reversal of 55085653 is 35658055.

It can be written as a sum of positive squares in only one way, i.e., 48413764 + 6671889 = 6958^2 + 2583^2 .

It is not a de Polignac number, because 55085653 - 21 = 55085651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55085651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 562050 + ... + 562147.

It is an arithmetic number, because the mean of its divisors is an integer number (10679881).

Almost surely, 255085653 is an apocalyptic number.

It is an amenable number.

55085653 is a deficient number, since it is larger than the sum of its proper divisors (8993633).

55085653 is a wasteful number, since it uses less digits than its factorization.

55085653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124211 (or 1124204 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 55085653 is about 7421.9709646427. The cubic root of 55085653 is about 380.4925584044.

The spelling of 55085653 in words is "fifty-five million, eighty-five thousand, six hundred fifty-three".

Divisors: 1 7 49 1124197 7869379 55085653