Search a number
-
+
55302184 = 2372711987
BaseRepresentation
bin1101001011110…
…1100000101000
310212001122100001
43102331200220
5103124132214
65253152344
71241026600
oct322754050
9125048301
1055302184
1129242393
121662b6b4
13b5c38b2
1474b7c00
154cc5c74
hex34bd828

55302184 has 48 divisors (see below), whose sum is σ = 122381280. Its totient is φ = 23355360.

The previous prime is 55302167. The next prime is 55302187. The reversal of 55302184 is 48120355.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (55302187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26839 + ... + 28825.

It is an arithmetic number, because the mean of its divisors is an integer number (2549610).

Almost surely, 255302184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55302184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61190640).

55302184 is an abundant number, since it is smaller than the sum of its proper divisors (67079096).

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

55302184 is a wasteful number, since it uses less digits than its factorization.

55302184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078 (or 2067 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 55302184 is about 7436.5438208888. The cubic root of 55302184 is about 380.9904540380.

55302184 divided by its sum of digits (28) gives a triangular number (1975078 = T1987).

The spelling of 55302184 in words is "fifty-five million, three hundred two thousand, one hundred eighty-four".

Divisors: 1 2 4 7 8 14 28 49 56 71 98 142 196 284 392 497 568 994 1987 1988 3479 3974 3976 6958 7948 13909 13916 15896 27818 27832 55636 97363 111272 141077 194726 282154 389452 564308 778904 987539 1128616 1975078 3950156 6912773 7900312 13825546 27651092 55302184