51764042 has 12 divisors (see below), whose sum is σ = 85346898. Its totient is φ = 23529000.

The previous prime is 51764021. The next prime is 51764047. The reversal of 51764042 is 24046715.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 12313081 = 6281^2 + 3509^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51763996 and 51764014.

It is not an unprimeable number, because it can be changed into a prime (51764047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106709 + ... + 107192.

Almost surely, 2^51764042 is an apocalyptic number.

51764042 is a deficient number, since it is larger than the sum of its proper divisors (33582856).

51764042 is a wasteful number, since it uses less digits than its factorization.

51764042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213925 (or 213914 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 51764042 is about 7194.7232052387. The cubic root of 51764042 is about 372.6856981408.

The spelling of 51764042 in words is "fifty-one million, seven hundred sixty-four thousand, forty-two".