23132550 has 48 divisors (see below), whose sum is σ = 65567232. Its totient is φ = 5287200.

The previous prime is 23132521. The next prime is 23132561. The reversal of 23132550 is 5523132.

It is a super-2 number, since 2×23132550² = 1070229739005000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9966 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (1365984).

Almost surely, 2^23132550 is an apocalyptic number.

23132550 is an abundant number, since it is smaller than the sum of its proper divisors (42434682).

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

23132550 is a wasteful number, since it uses less digits than its factorization.

23132550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22053 (or 22048 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 23132550 is about 4809.6309629742. The cubic root of 23132550 is about 284.9319628295.

Adding to 23132550 its reverse (5523132), we get a palindrome (28655682).

The spelling of 23132550 in words is "twenty-three million, one hundred thirty-two thousand, five hundred fifty".