51437522537 has 2 divisors, whose sum is σ = 51437522538. Its totient is φ = 51437522536.

The previous prime is 51437522509. The next prime is 51437522663. The reversal of 51437522537 is 73522573415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34865852176 + 16571670361 = 186724^2 + 128731^2 .

It is a cyclic number.

It is not a de Polignac number, because 51437522537 - 2¹⁸ = 51437260393 is a prime.

It is not a weakly prime, because it can be changed into another prime (51437525537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25718761268 + 25718761269.

It is an arithmetic number, because the mean of its divisors is an integer number (25718761269).

Almost surely, 2^51437522537 is an apocalyptic number.

It is an amenable number.

51437522537 is a deficient number, since it is larger than the sum of its proper divisors (1).

51437522537 is an equidigital number, since it uses as much as digits as its factorization.

51437522537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 44.

The spelling of 51437522537 in words is "fifty-one billion, four hundred thirty-seven million, five hundred twenty-two thousand, five hundred thirty-seven".