51236764 has 6 divisors (see below), whose sum is σ = 89664344. Its totient is φ = 25618380.

The previous prime is 51236747. The next prime is 51236771. The reversal of 51236764 is 46763215.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404592 + ... + 6404599.

Almost surely, 2^51236764 is an apocalyptic number.

It is an amenable number.

51236764 is a deficient number, since it is larger than the sum of its proper divisors (38427580).

51236764 is a wasteful number, since it uses less digits than its factorization.

51236764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809195 (or 12809193 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 51236764 is about 7157.9860296036. The cubic root of 51236764 is about 371.4159621811.

Adding to 51236764 its reverse (46763215), we get a palindrome (97999979).

The spelling of 51236764 in words is "fifty-one million, two hundred thirty-six thousand, seven hundred sixty-four".