23155115 has 8 divisors (see below), whose sum is σ = 27811968. Its totient is φ = 18506880.

The previous prime is 23155063. The next prime is 23155123. The reversal of 23155115 is 51155132.

23155115 = 864² + 865² + ... + 893².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23155115 - 2²² = 18960811 is a prime.

It is a super-4 number, since 4×23155115⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

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, 9635 + ... + 11795.

It is an arithmetic number, because the mean of its divisors is an integer number (3476496).

Almost surely, 2^23155115 is an apocalyptic number.

23155115 is a deficient number, since it is larger than the sum of its proper divisors (4656853).

23155115 is a wasteful number, since it uses less digits than its factorization.

23155115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309.

The product of its digits is 750, while the sum is 23.

The square root of 23155115 is about 4811.9762052612. The cubic root of 23155115 is about 285.0245798027.

The spelling of 23155115 in words is "twenty-three million, one hundred fifty-five thousand, one hundred fifteen".