51537907 has 2 divisors, whose sum is σ = 51537908. Its totient is φ = 51537906.

The previous prime is 51537881. The next prime is 51537923. The reversal of 51537907 is 70973515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51537907 - 2¹¹ = 51535859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51535907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25768953 + 25768954.

It is an arithmetic number, because the mean of its divisors is an integer number (25768954).

Almost surely, 2^51537907 is an apocalyptic number.

51537907 is a deficient number, since it is larger than the sum of its proper divisors (1).

51537907 is an equidigital number, since it uses as much as digits as its factorization.

51537907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 51537907 is about 7178.9906672178. The cubic root of 51537907 is about 372.1422043716.

The spelling of 51537907 in words is "fifty-one million, five hundred thirty-seven thousand, nine hundred seven".