51332279 has 2 divisors, whose sum is σ = 51332280. Its totient is φ = 51332278.

The previous prime is 51332273. The next prime is 51332339. The reversal of 51332279 is 97223315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51332279 - 2⁸ = 51332023 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51332273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25666139 + 25666140.

It is an arithmetic number, because the mean of its divisors is an integer number (25666140).

Almost surely, 2^51332279 is an apocalyptic number.

51332279 is a deficient number, since it is larger than the sum of its proper divisors (1).

51332279 is an equidigital number, since it uses as much as digits as its factorization.

51332279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 51332279 is about 7164.6548416515. The cubic root of 51332279 is about 371.6466154018.

The spelling of 51332279 in words is "fifty-one million, three hundred thirty-two thousand, two hundred seventy-nine".