52457213 has 2 divisors, whose sum is σ = 52457214. Its totient is φ = 52457212.

The previous prime is 52457173. The next prime is 52457221. The reversal of 52457213 is 31275425.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28270489 + 24186724 = 5317^2 + 4918^2 .

It is a cyclic number.

It is not a de Polignac number, because 52457213 - 2¹⁸ = 52195069 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52457263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26228606 + 26228607.

It is an arithmetic number, because the mean of its divisors is an integer number (26228607).

Almost surely, 2^52457213 is an apocalyptic number.

It is an amenable number.

52457213 is a deficient number, since it is larger than the sum of its proper divisors (1).

52457213 is an equidigital number, since it uses as much as digits as its factorization.

52457213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 52457213 is about 7242.7351877588. The cubic root of 52457213 is about 374.3418690529.

The spelling of 52457213 in words is "fifty-two million, four hundred fifty-seven thousand, two hundred thirteen".