51380677 has 2 divisors, whose sum is σ = 51380678. Its totient is φ = 51380676.

The previous prime is 51380639. The next prime is 51380701. The reversal of 51380677 is 77608315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28398241 + 22982436 = 5329^2 + 4794^2 .

It is a cyclic number.

It is not a de Polignac number, because 51380677 - 2²³ = 42992069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51380627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25690338 + 25690339.

It is an arithmetic number, because the mean of its divisors is an integer number (25690339).

Almost surely, 2^51380677 is an apocalyptic number.

It is an amenable number.

51380677 is a deficient number, since it is larger than the sum of its proper divisors (1).

51380677 is an equidigital number, since it uses as much as digits as its factorization.

51380677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 51380677 is about 7168.0315987027. The cubic root of 51380677 is about 371.7633795074.

The spelling of 51380677 in words is "fifty-one million, three hundred eighty thousand, six hundred seventy-seven".