23195515 has 16 divisors (see below), whose sum is σ = 32060160. Its totient is φ = 15780960.

The previous prime is 23195509. The next prime is 23195537. The reversal of 23195515 is 51559132.

It is not a de Polignac number, because 23195515 - 2⁵ = 23195483 is a prime.

It is a super-2 number, since 2×23195515² = 1076063832230450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056 + ... + 7114.

It is an arithmetic number, because the mean of its divisors is an integer number (2003760).

Almost surely, 2^23195515 is an apocalyptic number.

23195515 is a deficient number, since it is larger than the sum of its proper divisors (8864645).

23195515 is a wasteful number, since it uses less digits than its factorization.

23195515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202.

The product of its digits is 6750, while the sum is 31.

The square root of 23195515 is about 4816.1722352923. The cubic root of 23195515 is about 285.1902494983.

The spelling of 23195515 in words is "twenty-three million, one hundred ninety-five thousand, five hundred fifteen".