51400577 has 2 divisors, whose sum is σ = 51400578. Its totient is φ = 51400576.

The previous prime is 51400507. The next prime is 51400579. The reversal of 51400577 is 77500415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28206721 + 23193856 = 5311^2 + 4816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51400577 is a prime.

Together with 51400579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51400579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700288 + 25700289.

It is an arithmetic number, because the mean of its divisors is an integer number (25700289).

Almost surely, 2^51400577 is an apocalyptic number.

It is an amenable number.

51400577 is a deficient number, since it is larger than the sum of its proper divisors (1).

51400577 is an equidigital number, since it uses as much as digits as its factorization.

51400577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 51400577 is about 7169.4195720435. The cubic root of 51400577 is about 371.8113686009.

The spelling of 51400577 in words is "fifty-one million, four hundred thousand, five hundred seventy-seven".