172520572 has 36 divisors (see below), whose sum is σ = 352068024. Its totient is φ = 73755360.

The previous prime is 172520567. The next prime is 172520633. The reversal of 172520572 is 275025271.

It is a congruent number.

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, 105223 + ... + 106849.

Almost surely, 2^172520572 is an apocalyptic number.

It is an amenable number.

172520572 is an abundant number, since it is smaller than the sum of its proper divisors (179547452).

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

172520572 is a wasteful number, since it uses less digits than its factorization.

172520572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 172520572 is about 13134.7086758710. The cubic root of 172520572 is about 556.6902689185.

The spelling of 172520572 in words is "one hundred seventy-two million, five hundred twenty thousand, five hundred seventy-two".