52657399 has 2 divisors, whose sum is σ = 52657400. Its totient is φ = 52657398.

The previous prime is 52657393. The next prime is 52657421. The reversal of 52657399 is 99375625.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52657399 - 2³ = 52657391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52657391) 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, 26328699 + 26328700.

It is an arithmetic number, because the mean of its divisors is an integer number (26328700).

Almost surely, 2^52657399 is an apocalyptic number.

52657399 is a deficient number, since it is larger than the sum of its proper divisors (1).

52657399 is an equidigital number, since it uses as much as digits as its factorization.

52657399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 46.

The square root of 52657399 is about 7256.5418072247. The cubic root of 52657399 is about 374.8174495190.

The spelling of 52657399 in words is "fifty-two million, six hundred fifty-seven thousand, three hundred ninety-nine".