102557172 has 12 divisors (see below), whose sum is σ = 239300096. Its totient is φ = 34185720.

The previous prime is 102557167. The next prime is 102557179. The reversal of 102557172 is 271755201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102557179) 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, 4273204 + ... + 4273227.

Almost surely, 2^102557172 is an apocalyptic number.

102557172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102557172 is an abundant number, since it is smaller than the sum of its proper divisors (136742924).

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

102557172 is a wasteful number, since it uses less digits than its factorization.

102557172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546438 (or 8546436 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 102557172 is about 10127.0514958699. The cubic root of 102557172 is about 468.0820770649.

The spelling of 102557172 in words is "one hundred two million, five hundred fifty-seven thousand, one hundred seventy-two".