23123550 has 24 divisors (see below), whose sum is σ = 57346776. Its totient is φ = 6166240.

The previous prime is 23123521. The next prime is 23123563. The reversal of 23123550 is 5532132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76929 + ... + 77228.

It is an arithmetic number, because the mean of its divisors is an integer number (2389449).

Almost surely, 2^23123550 is an apocalyptic number.

23123550 is an abundant number, since it is smaller than the sum of its proper divisors (34223226).

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

23123550 is a wasteful number, since it uses less digits than its factorization.

23123550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154172 (or 154167 counting only the distinct ones).

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

The square root of 23123550 is about 4808.6952492334. The cubic root of 23123550 is about 284.8950059540.

Adding to 23123550 its reverse (5532132), we get a palindrome (28655682).

The spelling of 23123550 in words is "twenty-three million, one hundred twenty-three thousand, five hundred fifty".