172865552 has 20 divisors (see below), whose sum is σ = 335134800. Its totient is φ = 86379168.

The previous prime is 172865531. The next prime is 172865557. The reversal of 172865552 is 255568271.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (172865557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41183 + ... + 45185.

It is an arithmetic number, because the mean of its divisors is an integer number (16756740).

Almost surely, 2^172865552 is an apocalyptic number.

It is an amenable number.

172865552 is a deficient number, since it is larger than the sum of its proper divisors (162269248).

172865552 is a wasteful number, since it uses less digits than its factorization.

172865552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710 (or 6704 counting only the distinct ones).

The product of its digits is 168000, while the sum is 41.

The square root of 172865552 is about 13147.8344985020. The cubic root of 172865552 is about 557.0610829420.

The spelling of 172865552 in words is "one hundred seventy-two million, eight hundred sixty-five thousand, five hundred fifty-two".