52002157 has 2 divisors, whose sum is σ = 52002158. Its totient is φ = 52002156.

The previous prime is 52002143. The next prime is 52002161. The reversal of 52002157 is 75120025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 2172676 = 7059^2 + 1474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52002157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52002557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26001078 + 26001079.

It is an arithmetic number, because the mean of its divisors is an integer number (26001079).

Almost surely, 2^52002157 is an apocalyptic number.

It is an amenable number.

52002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

52002157 is an equidigital number, since it uses as much as digits as its factorization.

52002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 52002157 is about 7211.2521104174. The cubic root of 52002157 is about 373.2562765248.

The spelling of 52002157 in words is "fifty-two million, two thousand, one hundred fifty-seven".