51130537 has 2 divisors, whose sum is σ = 51130538. Its totient is φ = 51130536.

The previous prime is 51130529. The next prime is 51130571. The reversal of 51130537 is 73503115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40081561 + 11048976 = 6331^2 + 3324^2 .

It is a cyclic number.

It is not a de Polignac number, because 51130537 - 2³ = 51130529 is a prime.

It is a super-2 number, since 2×51130537² = 5228663627816738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51130507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25565268 + 25565269.

It is an arithmetic number, because the mean of its divisors is an integer number (25565269).

Almost surely, 2^51130537 is an apocalyptic number.

It is an amenable number.

51130537 is a deficient number, since it is larger than the sum of its proper divisors (1).

51130537 is an equidigital number, since it uses as much as digits as its factorization.

51130537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 51130537 is about 7150.5620058846. The cubic root of 51130537 is about 371.1591042913.

The spelling of 51130537 in words is "fifty-one million, one hundred thirty thousand, five hundred thirty-seven".