220515172 has 24 divisors (see below), whose sum is σ = 391128192. Its totient is φ = 108772800.

The previous prime is 220515167. The next prime is 220515173. The reversal of 220515172 is 271515022.

It is not an unprimeable number, because it can be changed into a prime (220515173) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 127272 + ... + 128992.

It is an arithmetic number, because the mean of its divisors is an integer number (16297008).

Almost surely, 2^220515172 is an apocalyptic number.

It is an amenable number.

220515172 is a deficient number, since it is larger than the sum of its proper divisors (170613020).

220515172 is a wasteful number, since it uses less digits than its factorization.

220515172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 220515172 is about 14849.7532639435. The cubic root of 220515172 is about 604.1519178410.

The spelling of 220515172 in words is "two hundred twenty million, five hundred fifteen thousand, one hundred seventy-two".