51976369 has 2 divisors, whose sum is σ = 51976370. Its totient is φ = 51976368.

The previous prime is 51976363. The next prime is 51976399. The reversal of 51976369 is 96367915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35856144 + 16120225 = 5988^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 51976369 - 2⁷ = 51976241 is a prime.

It is a super-2 number, since 2×51976369² = 5403085868848322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51976363) 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, 25988184 + 25988185.

It is an arithmetic number, because the mean of its divisors is an integer number (25988185).

Almost surely, 2^51976369 is an apocalyptic number.

It is an amenable number.

51976369 is a deficient number, since it is larger than the sum of its proper divisors (1).

51976369 is an equidigital number, since it uses as much as digits as its factorization.

51976369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 46.

The square root of 51976369 is about 7209.4638496909. The cubic root of 51976369 is about 373.1945667487.

The spelling of 51976369 in words is "fifty-one million, nine hundred seventy-six thousand, three hundred sixty-nine".