51850272013 has 2 divisors, whose sum is σ = 51850272014. Its totient is φ = 51850272012.

The previous prime is 51850271981. The next prime is 51850272073. The reversal of 51850272013 is 31027205815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51657562089 + 192709924 = 227283^2 + 13882^2 .

It is a cyclic number.

It is not a de Polignac number, because 51850272013 - 2⁵ = 51850271981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51850272013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51850272073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25925136006 + 25925136007.

It is an arithmetic number, because the mean of its divisors is an integer number (25925136007).

Almost surely, 2^51850272013 is an apocalyptic number.

It is an amenable number.

51850272013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51850272013 is an equidigital number, since it uses as much as digits as its factorization.

51850272013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 51850272013 its reverse (31027205815), we get a palindrome (82877477828).

The spelling of 51850272013 in words is "fifty-one billion, eight hundred fifty million, two hundred seventy-two thousand, thirteen".