23551957 has 16 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 19569600.

The previous prime is 23551949. The next prime is 23551967. The reversal of 23551957 is 75915532.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23551957 - 2³ = 23551949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23551937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14832 + ... + 16342.

It is an arithmetic number, because the mean of its divisors is an integer number (1746360).

Almost surely, 2^23551957 is an apocalyptic number.

It is an amenable number.

23551957 is a deficient number, since it is larger than the sum of its proper divisors (4389803).

23551957 is a wasteful number, since it uses less digits than its factorization.

23551957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its digits is 47250, while the sum is 37.

The square root of 23551957 is about 4853.0358539784. The cubic root of 23551957 is about 286.6436552348.

The spelling of 23551957 in words is "twenty-three million, five hundred fifty-one thousand, nine hundred fifty-seven".