51751967 has 2 divisors, whose sum is σ = 51751968. Its totient is φ = 51751966.

The previous prime is 51751957. The next prime is 51751981. The reversal of 51751967 is 76915715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51751967 - 2¹⁶ = 51686431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51751907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25875983 + 25875984.

It is an arithmetic number, because the mean of its divisors is an integer number (25875984).

Almost surely, 2^51751967 is an apocalyptic number.

51751967 is a deficient number, since it is larger than the sum of its proper divisors (1).

51751967 is an equidigital number, since it uses as much as digits as its factorization.

51751967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 41.

The square root of 51751967 is about 7193.8839996208. The cubic root of 51751967 is about 372.6567170850.

The spelling of 51751967 in words is "fifty-one million, seven hundred fifty-one thousand, nine hundred sixty-seven".