172555055 has 16 divisors (see below), whose sum is σ = 218546400. Its totient is φ = 130429440.

The previous prime is 172555037. The next prime is 172555057. The reversal of 172555055 is 550555271.

It is not a de Polignac number, because 172555055 - 2⁸ = 172554799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172555057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36635 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (13659150).

Almost surely, 2^172555055 is an apocalyptic number.

172555055 is a deficient number, since it is larger than the sum of its proper divisors (45991345).

172555055 is a wasteful number, since it uses less digits than its factorization.

172555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874.

The product of its (nonzero) digits is 43750, while the sum is 35.

The square root of 172555055 is about 13136.0212773884. The cubic root of 172555055 is about 556.7273564215.

The spelling of 172555055 in words is "one hundred seventy-two million, five hundred fifty-five thousand, fifty-five".