52130399 has 2 divisors, whose sum is σ = 52130400. Its totient is φ = 52130398.

The previous prime is 52130389. The next prime is 52130411. The reversal of 52130399 is 99303125.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52130399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52130329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26065199 + 26065200.

It is an arithmetic number, because the mean of its divisors is an integer number (26065200).

Almost surely, 2^52130399 is an apocalyptic number.

52130399 is a deficient number, since it is larger than the sum of its proper divisors (1).

52130399 is an equidigital number, since it uses as much as digits as its factorization.

52130399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 52130399 is about 7220.1384335759. The cubic root of 52130399 is about 373.5628525066.

The spelling of 52130399 in words is "fifty-two million, one hundred thirty thousand, three hundred ninety-nine".