23215955 has 16 divisors (see below), whose sum is σ = 32491200. Its totient is φ = 15918336.

The previous prime is 23215949. The next prime is 23215957. The reversal of 23215955 is 55951232.

It is not a de Polignac number, because 23215955 - 2¹⁰ = 23214931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23215957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5054 + ... + 8483.

It is an arithmetic number, because the mean of its divisors is an integer number (2030700).

Almost surely, 2^23215955 is an apocalyptic number.

23215955 is a deficient number, since it is larger than the sum of its proper divisors (9275245).

23215955 is an equidigital number, since it uses as much as digits as its factorization.

23215955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13563 (or 13549 counting only the distinct ones).

The product of its digits is 13500, while the sum is 32.

The square root of 23215955 is about 4818.2937851484. The cubic root of 23215955 is about 285.2739952464.

The spelling of 23215955 in words is "twenty-three million, two hundred fifteen thousand, nine hundred fifty-five".