51572007437 has 2 divisors, whose sum is σ = 51572007438. Its totient is φ = 51572007436.

The previous prime is 51572007419. The next prime is 51572007451. The reversal of 51572007437 is 73470027515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46987498756 + 4584508681 = 216766^2 + 67709^2 .

It is a cyclic number.

It is not a de Polignac number, because 51572007437 - 2⁸ = 51572007181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51572007394 and 51572007403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51572007457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25786003718 + 25786003719.

It is an arithmetic number, because the mean of its divisors is an integer number (25786003719).

Almost surely, 2^51572007437 is an apocalyptic number.

It is an amenable number.

51572007437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51572007437 is an equidigital number, since it uses as much as digits as its factorization.

51572007437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 205800, while the sum is 41.

The spelling of 51572007437 in words is "fifty-one billion, five hundred seventy-two million, seven thousand, four hundred thirty-seven".