51245338037 has 2 divisors, whose sum is σ = 51245338038. Its totient is φ = 51245338036.

The previous prime is 51245338019. The next prime is 51245338057. The reversal of 51245338037 is 73083354215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50982930436 + 262407601 = 225794^2 + 16199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51245338037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51245337985 and 51245338003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51245338057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622669018 + 25622669019.

It is an arithmetic number, because the mean of its divisors is an integer number (25622669019).

Almost surely, 2^51245338037 is an apocalyptic number.

It is an amenable number.

51245338037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245338037 is an equidigital number, since it uses as much as digits as its factorization.

51245338037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 51245338037 in words is "fifty-one billion, two hundred forty-five million, three hundred thirty-eight thousand, thirty-seven".