51237067157 has 2 divisors, whose sum is σ = 51237067158. Its totient is φ = 51237067156.

The previous prime is 51237067129. The next prime is 51237067177. The reversal of 51237067157 is 75176073215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51118496836 + 118570321 = 226094^2 + 10889^2 .

It is a cyclic number.

It is not a de Polignac number, because 51237067157 - 2⁸ = 51237066901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51237067177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25618533578 + 25618533579.

It is an arithmetic number, because the mean of its divisors is an integer number (25618533579).

Almost surely, 2^51237067157 is an apocalyptic number.

It is an amenable number.

51237067157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51237067157 is an equidigital number, since it uses as much as digits as its factorization.

51237067157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308700, while the sum is 44.

The spelling of 51237067157 in words is "fifty-one billion, two hundred thirty-seven million, sixty-seven thousand, one hundred fifty-seven".