51402037 has 2 divisors, whose sum is σ = 51402038. Its totient is φ = 51402036.

The previous prime is 51402019. The next prime is 51402041. The reversal of 51402037 is 73020415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27185796 + 24216241 = 5214^2 + 4921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51402037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51401999 and 51402017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51402017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25701018 + 25701019.

It is an arithmetic number, because the mean of its divisors is an integer number (25701019).

Almost surely, 2^51402037 is an apocalyptic number.

It is an amenable number.

51402037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51402037 is an equidigital number, since it uses as much as digits as its factorization.

51402037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 51402037 is about 7169.5213926733. The cubic root of 51402037 is about 371.8148889211.

The spelling of 51402037 in words is "fifty-one million, four hundred two thousand, thirty-seven".