51837613 has 2 divisors, whose sum is σ = 51837614. Its totient is φ = 51837612.

The previous prime is 51837601. The next prime is 51837619. The reversal of 51837613 is 31673815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51796809 + 40804 = 7197^2 + 202^2 .

It is a cyclic number.

It is not a de Polignac number, because 51837613 - 2⁵ = 51837581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51837619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25918806 + 25918807.

It is an arithmetic number, because the mean of its divisors is an integer number (25918807).

Almost surely, 2^51837613 is an apocalyptic number.

It is an amenable number.

51837613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51837613 is an equidigital number, since it uses as much as digits as its factorization.

51837613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 51837613 is about 7199.8342342029. The cubic root of 51837613 is about 372.8621776606.

The spelling of 51837613 in words is "fifty-one million, eight hundred thirty-seven thousand, six hundred thirteen".