51333764 has 6 divisors (see below), whose sum is σ = 89834094. Its totient is φ = 25666880.

The previous prime is 51333739. The next prime is 51333803. The reversal of 51333764 is 46733315.

It can be written as a sum of positive squares in only one way, i.e., 38316100 + 13017664 = 6190^2 + 3608^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51333764.

It is an unprimeable number.

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, 6416717 + ... + 6416724.

It is an arithmetic number, because the mean of its divisors is an integer number (14972349).

Almost surely, 2^51333764 is an apocalyptic number.

It is an amenable number.

51333764 is a deficient number, since it is larger than the sum of its proper divisors (38500330).

51333764 is a wasteful number, since it uses less digits than its factorization.

51333764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833445 (or 12833443 counting only the distinct ones).

The product of its digits is 22680, while the sum is 32.

The square root of 51333764 is about 7164.7584746452. The cubic root of 51333764 is about 371.6501991761.

The spelling of 51333764 in words is "fifty-one million, three hundred thirty-three thousand, seven hundred sixty-four".