51136507 has 2 divisors, whose sum is σ = 51136508. Its totient is φ = 51136506.

The previous prime is 51136487. The next prime is 51136511. The reversal of 51136507 is 70563115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51136507 - 2¹¹ = 51134459 is a prime.

It is a super-2 number, since 2×51136507² = 5229884696322098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51136537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25568253 + 25568254.

It is an arithmetic number, because the mean of its divisors is an integer number (25568254).

Almost surely, 2^51136507 is an apocalyptic number.

51136507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51136507 is an equidigital number, since it uses as much as digits as its factorization.

51136507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 51136507 is about 7150.9794434049. The cubic root of 51136507 is about 371.1735492379.

The spelling of 51136507 in words is "fifty-one million, one hundred thirty-six thousand, five hundred seven".