51594661 has 2 divisors, whose sum is σ = 51594662. Its totient is φ = 51594660.

The previous prime is 51594637. The next prime is 51594689. The reversal of 51594661 is 16649515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 185761 = 7170^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 51594661 - 2⁷ = 51594533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51594661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51594601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25797330 + 25797331.

It is an arithmetic number, because the mean of its divisors is an integer number (25797331).

Almost surely, 2^51594661 is an apocalyptic number.

It is an amenable number.

51594661 is a deficient number, since it is larger than the sum of its proper divisors (1).

51594661 is an equidigital number, since it uses as much as digits as its factorization.

51594661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 51594661 is about 7182.9423636836. The cubic root of 51594661 is about 372.2787563578.

The spelling of 51594661 in words is "fifty-one million, five hundred ninety-four thousand, six hundred sixty-one".