172550868 has 48 divisors (see below), whose sum is σ = 461107584. Its totient is φ = 49196160.

The previous prime is 172550843. The next prime is 172550891. The reversal of 172550868 is 868055271.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 43546 + ... + 47342.

It is an arithmetic number, because the mean of its divisors is an integer number (9606408).

Almost surely, 2^172550868 is an apocalyptic number.

It is an amenable number.

172550868 is an abundant number, since it is smaller than the sum of its proper divisors (288556716).

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

172550868 is a wasteful number, since it uses less digits than its factorization.

172550868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352 (or 4350 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 172550868 is about 13135.8619054861. The cubic root of 172550868 is about 556.7228534408.

The spelling of 172550868 in words is "one hundred seventy-two million, five hundred fifty thousand, eight hundred sixty-eight".