172055370 has 16 divisors (see below), whose sum is σ = 412932960. Its totient is φ = 45881424.

The previous prime is 172055369. The next prime is 172055381. The reversal of 172055370 is 73550271.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5735179 = 172055370 / (1 + 7 + 2 + 0 + 5 + 5 + 3 + 7 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867560 + ... + 2867619.

It is an arithmetic number, because the mean of its divisors is an integer number (25808310).

Almost surely, 2^172055370 is an apocalyptic number.

172055370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172055370 is an abundant number, since it is smaller than the sum of its proper divisors (240877590).

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

172055370 is a wasteful number, since it uses less digits than its factorization.

172055370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735189.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 172055370 is about 13116.9878402017. The cubic root of 172055370 is about 556.1894464235.

The spelling of 172055370 in words is "one hundred seventy-two million, fifty-five thousand, three hundred seventy".