172515080 has 32 divisors (see below), whose sum is σ = 389626200. Its totient is φ = 68745216.

The previous prime is 172515071. The next prime is 172515103. The reversal of 172515080 is 80515271.

It can be written as a sum of positive squares in 4 ways, for example, as 36699364 + 135815716 = 6058^2 + 11654^2 .

It is a super-2 number, since 2×172515080² = 59522905654812800, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2744 + ... + 18776.

Almost surely, 2^172515080 is an apocalyptic number.

172515080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172515080 is an abundant number, since it is smaller than the sum of its proper divisors (217111120).

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

172515080 is a wasteful number, since it uses less digits than its factorization.

172515080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16313 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 172515080 is about 13134.4996098062. The cubic root of 172515080 is about 556.6843616512.

The spelling of 172515080 in words is "one hundred seventy-two million, five hundred fifteen thousand, eighty".