52321957 has 4 divisors (see below), whose sum is σ = 53179756. Its totient is φ = 51464160.

The previous prime is 52321949. The next prime is 52321961. The reversal of 52321957 is 75912325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1256641 + 51065316 = 1121^2 + 7146^2 .

It is a cyclic number.

It is not a de Polignac number, because 52321957 - 2³ = 52321949 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 (52321057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428808 + ... + 428929.

It is an arithmetic number, because the mean of its divisors is an integer number (13294939).

Almost surely, 2^52321957 is an apocalyptic number.

It is an amenable number.

52321957 is a deficient number, since it is larger than the sum of its proper divisors (857799).

52321957 is an equidigital number, since it uses as much as digits as its factorization.

52321957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857798.

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

The square root of 52321957 is about 7233.3918046792. The cubic root of 52321957 is about 374.0198570105.

The spelling of 52321957 in words is "fifty-two million, three hundred twenty-one thousand, nine hundred fifty-seven".