23555500 has 24 divisors (see below), whose sum is σ = 51446304. Its totient is φ = 9422000.

The previous prime is 23555449. The next prime is 23555501. The reversal of 23555500 is 555532.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (23555501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23056 + ... + 24055.

It is an arithmetic number, because the mean of its divisors is an integer number (2143596).

Almost surely, 2^23555500 is an apocalyptic number.

23555500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23555500 is an abundant number, since it is smaller than the sum of its proper divisors (27890804).

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

23555500 is a wasteful number, since it uses less digits than its factorization.

23555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47130 (or 47118 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 23555500 is about 4853.4008694935. The cubic root of 23555500 is about 286.6580281034.

The spelling of 23555500 in words is "twenty-three million, five hundred fifty-five thousand, five hundred".