23155957 has 8 divisors (see below), whose sum is σ = 25362432. Its totient is φ = 20966400.

The previous prime is 23155919. The next prime is 23155981. The reversal of 23155957 is 75955132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23155957 - 2⁷ = 23155829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155987) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1269 + ... + 6922.

It is an arithmetic number, because the mean of its divisors is an integer number (3170304).

Almost surely, 2^23155957 is an apocalyptic number.

It is an amenable number.

23155957 is a deficient number, since it is larger than the sum of its proper divisors (2206475).

23155957 is a wasteful number, since it uses less digits than its factorization.

23155957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8459.

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

The square root of 23155957 is about 4812.0636945078. The cubic root of 23155957 is about 285.0280345871.

The spelling of 23155957 in words is "twenty-three million, one hundred fifty-five thousand, nine hundred fifty-seven".