51755764 has 6 divisors (see below), whose sum is σ = 90572594. Its totient is φ = 25877880.

The previous prime is 51755761. The next prime is 51755779. The reversal of 51755764 is 46755715.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50523664 + 1232100 = 7108^2 + 1110^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51755761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469467 + ... + 6469474.

Almost surely, 2^51755764 is an apocalyptic number.

It is an amenable number.

51755764 is a deficient number, since it is larger than the sum of its proper divisors (38816830).

51755764 is a wasteful number, since it uses less digits than its factorization.

51755764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938945 (or 12938943 counting only the distinct ones).

The product of its digits is 147000, while the sum is 40.

The square root of 51755764 is about 7194.1478995083. The cubic root of 51755764 is about 372.6658307029.

The spelling of 51755764 in words is "fifty-one million, seven hundred fifty-five thousand, seven hundred sixty-four".