51028507 has 2 divisors, whose sum is σ = 51028508. Its totient is φ = 51028506.

The previous prime is 51028501. The next prime is 51028517. The reversal of 51028507 is 70582015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51028507 - 2¹⁹ = 50504219 is a prime.

It is not a weakly prime, because it can be changed into another prime (51028501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25514253 + 25514254.

It is an arithmetic number, because the mean of its divisors is an integer number (25514254).

Almost surely, 2^51028507 is an apocalyptic number.

51028507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51028507 is an equidigital number, since it uses as much as digits as its factorization.

51028507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 51028507 is about 7143.4240389326. The cubic root of 51028507 is about 370.9120596171.

The spelling of 51028507 in words is "fifty-one million, twenty-eight thousand, five hundred seven".