53125139 has 2 divisors, whose sum is σ = 53125140. Its totient is φ = 53125138.

The previous prime is 53125117. The next prime is 53125151. The reversal of 53125139 is 93152135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53125139 - 2¹² = 53121043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53125199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26562569 + 26562570.

It is an arithmetic number, because the mean of its divisors is an integer number (26562570).

Almost surely, 2^53125139 is an apocalyptic number.

53125139 is a deficient number, since it is larger than the sum of its proper divisors (1).

53125139 is an equidigital number, since it uses as much as digits as its factorization.

53125139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 29.

The square root of 53125139 is about 7288.6994038717. The cubic root of 53125139 is about 375.9239769153.

The spelling of 53125139 in words is "fifty-three million, one hundred twenty-five thousand, one hundred thirty-nine".