52157401 has 2 divisors, whose sum is σ = 52157402. Its totient is φ = 52157400.

The previous prime is 52157393. The next prime is 52157419. The reversal of 52157401 is 10475125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51768025 + 389376 = 7195^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 52157401 - 2³ = 52157393 is a prime.

It is not a weakly prime, because it can be changed into another prime (52157101) 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, 26078700 + 26078701.

It is an arithmetic number, because the mean of its divisors is an integer number (26078701).

Almost surely, 2^52157401 is an apocalyptic number.

It is an amenable number.

52157401 is a deficient number, since it is larger than the sum of its proper divisors (1).

52157401 is an equidigital number, since it uses as much as digits as its factorization.

52157401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 52157401 is about 7222.0081002447. The cubic root of 52157401 is about 373.6273395319.

The spelling of 52157401 in words is "fifty-two million, one hundred fifty-seven thousand, four hundred one".