51056342507 has 2 divisors, whose sum is σ = 51056342508. Its totient is φ = 51056342506.

The previous prime is 51056342503. The next prime is 51056342551. The reversal of 51056342507 is 70524365015.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51056342507 - 2² = 51056342503 is a prime.

It is a super-2 number, since 2×51056342507² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51056342503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25528171253 + 25528171254.

It is an arithmetic number, because the mean of its divisors is an integer number (25528171254).

Almost surely, 2^51056342507 is an apocalyptic number.

51056342507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51056342507 is an equidigital number, since it uses as much as digits as its factorization.

51056342507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 51056342507 in words is "fifty-one billion, fifty-six million, three hundred forty-two thousand, five hundred seven".