51475658357 has 2 divisors, whose sum is σ = 51475658358. Its totient is φ = 51475658356.

The previous prime is 51475658347. The next prime is 51475658417. The reversal of 51475658357 is 75385657415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44992348996 + 6483309361 = 212114^2 + 80519^2 .

It is a cyclic number.

It is not a de Polignac number, because 51475658357 - 2³⁴ = 34295789173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51475658347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25737829178 + 25737829179.

It is an arithmetic number, because the mean of its divisors is an integer number (25737829179).

Almost surely, 2^51475658357 is an apocalyptic number.

It is an amenable number.

51475658357 is a deficient number, since it is larger than the sum of its proper divisors (1).

51475658357 is an equidigital number, since it uses as much as digits as its factorization.

51475658357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640000, while the sum is 56.

The spelling of 51475658357 in words is "fifty-one billion, four hundred seventy-five million, six hundred fifty-eight thousand, three hundred fifty-seven".