51357751 has 2 divisors, whose sum is σ = 51357752. Its totient is φ = 51357750.

The previous prime is 51357743. The next prime is 51357769. The reversal of 51357751 is 15775315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51357751 - 2³ = 51357743 is a prime.

It is equal to p_3077593 and since 51357751 and 3077593 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51357701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25678875 + 25678876.

It is an arithmetic number, because the mean of its divisors is an integer number (25678876).

Almost surely, 2^51357751 is an apocalyptic number.

51357751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51357751 is an equidigital number, since it uses as much as digits as its factorization.

51357751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18375, while the sum is 34.

The square root of 51357751 is about 7166.4322364758. The cubic root of 51357751 is about 371.7080778148.

The spelling of 51357751 in words is "fifty-one million, three hundred fifty-seven thousand, seven hundred fifty-one".