51527657 has 2 divisors, whose sum is σ = 51527658. Its totient is φ = 51527656.

The previous prime is 51527647. The next prime is 51527681. The reversal of 51527657 is 75672515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36348841 + 15178816 = 6029^2 + 3896^2 .

It is a cyclic number.

It is not a de Polignac number, because 51527657 - 2⁸ = 51527401 is a prime.

It is a super-3 number, since 3×51527657³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51527657.

It is not a weakly prime, because it can be changed into another prime (51527617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25763828 + 25763829.

It is an arithmetic number, because the mean of its divisors is an integer number (25763829).

Almost surely, 2^51527657 is an apocalyptic number.

It is an amenable number.

51527657 is a deficient number, since it is larger than the sum of its proper divisors (1).

51527657 is an equidigital number, since it uses as much as digits as its factorization.

51527657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73500, while the sum is 38.

The square root of 51527657 is about 7178.2767430631. The cubic root of 51527657 is about 372.1175318492.

The spelling of 51527657 in words is "fifty-one million, five hundred twenty-seven thousand, six hundred fifty-seven".