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55187104 = 257246371
BaseRepresentation
bin1101001010000…
…1011010100000
310211211210110211
43102201122200
5103111441404
65250503504
71240040230
oct322413240
9124753424
1055187104
1129173985
1216594b94
13b5833bb
147487cc0
154ca1b04
hex34a16a0

55187104 has 24 divisors (see below), whose sum is σ = 124171488. Its totient is φ = 23651520.

The previous prime is 55187101. The next prime is 55187113. The reversal of 55187104 is 40178155.

It is not an unprimeable number, because it can be changed into a prime (55187101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122962 + ... + 123409.

It is an arithmetic number, because the mean of its divisors is an integer number (5173812).

Almost surely, 255187104 is an apocalyptic number.

It is an amenable number.

55187104 is an abundant number, since it is smaller than the sum of its proper divisors (68984384).

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

55187104 is a wasteful number, since it uses less digits than its factorization.

55187104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246388 (or 246380 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 55187104 is about 7428.8023260819. The cubic root of 55187104 is about 380.7259989668.

The spelling of 55187104 in words is "fifty-five million, one hundred eighty-seven thousand, one hundred four".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 246371 492742 985484 1724597 1970968 3449194 3941936 6898388 7883872 13796776 27593552 55187104