52157923 has 2 divisors, whose sum is σ = 52157924. Its totient is φ = 52157922.

The previous prime is 52157909. The next prime is 52157929. The reversal of 52157923 is 32975125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52157923 - 2⁵ = 52157891 is a prime.

It is not a weakly prime, because it can be changed into another prime (52157929) 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 as a sum of consecutive naturals, namely, 26078961 + 26078962.

It is an arithmetic number, because the mean of its divisors is an integer number (26078962).

Almost surely, 2^52157923 is an apocalyptic number.

52157923 is a deficient number, since it is larger than the sum of its proper divisors (1).

52157923 is an equidigital number, since it uses as much as digits as its factorization.

52157923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 52157923 is about 7222.0442396873. The cubic root of 52157923 is about 373.6285859694.

The spelling of 52157923 in words is "fifty-two million, one hundred fifty-seven thousand, nine hundred twenty-three".