51495539 has 2 divisors, whose sum is σ = 51495540. Its totient is φ = 51495538.

The previous prime is 51495523. The next prime is 51495547. The reversal of 51495539 is 93559415.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51495539 - 2⁴ = 51495523 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51495496 and 51495505.

It is not a weakly prime, because it can be changed into another prime (51495599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25747769 + 25747770.

It is an arithmetic number, because the mean of its divisors is an integer number (25747770).

Almost surely, 2^51495539 is an apocalyptic number.

51495539 is a deficient number, since it is larger than the sum of its proper divisors (1).

51495539 is an equidigital number, since it uses as much as digits as its factorization.

51495539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121500, while the sum is 41.

The square root of 51495539 is about 7176.0392278749. The cubic root of 51495539 is about 372.0402002072.

The spelling of 51495539 in words is "fifty-one million, four hundred ninety-five thousand, five hundred thirty-nine".