51075499 has 2 divisors, whose sum is σ = 51075500. Its totient is φ = 51075498.

The previous prime is 51075481. The next prime is 51075509. The reversal of 51075499 is 99457015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51075499 - 2¹⁵ = 51042731 is a prime.

It is not a weakly prime, because it can be changed into another prime (51075449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25537749 + 25537750.

It is an arithmetic number, because the mean of its divisors is an integer number (25537750).

Almost surely, 2^51075499 is an apocalyptic number.

51075499 is a deficient number, since it is larger than the sum of its proper divisors (1).

51075499 is an equidigital number, since it uses as much as digits as its factorization.

51075499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 51075499 is about 7146.7124609851. The cubic root of 51075499 is about 371.0258819548.

The spelling of 51075499 in words is "fifty-one million, seventy-five thousand, four hundred ninety-nine".