172157752 has 32 divisors (see below), whose sum is σ = 353530800. Its totient is φ = 78107904.

The previous prime is 172157749. The next prime is 172157789. The reversal of 172157752 is 257751271.

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 7 ways as a sum of consecutive naturals, for example, 7893 + ... + 20164.

Almost surely, 2^172157752 is an apocalyptic number.

It is an amenable number.

172157752 is an abundant number, since it is smaller than the sum of its proper divisors (181373048).

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

172157752 is a wasteful number, since it uses less digits than its factorization.

172157752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28135 (or 28131 counting only the distinct ones).

The product of its digits is 34300, while the sum is 37.

The square root of 172157752 is about 13120.8899088438. The cubic root of 172157752 is about 556.2997452124.

The spelling of 172157752 in words is "one hundred seventy-two million, one hundred fifty-seven thousand, seven hundred fifty-two".