253172100 has 36 divisors (see below), whose sum is σ = 732512144. Its totient is φ = 67512480.

The previous prime is 253172099. The next prime is 253172111. The reversal of 253172100 is 1271352.

It is a super-2 number, since 2×253172100² = 128192224436820000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421654 + ... + 422253.

Almost surely, 2^253172100 is an apocalyptic number.

253172100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253172100 is an abundant number, since it is smaller than the sum of its proper divisors (479340044).

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

253172100 is a wasteful number, since it uses less digits than its factorization.

253172100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843924 (or 843917 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 253172100 is about 15911.3827180418. The cubic root of 253172100 is about 632.6137317811.

The spelling of 253172100 in words is "two hundred fifty-three million, one hundred seventy-two thousand, one hundred".