51267764 has 12 divisors (see below), whose sum is σ = 89868324. Its totient is φ = 25591104.

The previous prime is 51267673. The next prime is 51267779. The reversal of 51267764 is 46776215.

It can be written as a sum of positive squares in 2 ways, for example, as 23600164 + 27667600 = 4858^2 + 5260^2 .

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 7919 + ... + 12854.

It is an arithmetic number, because the mean of its divisors is an integer number (7489027).

Almost surely, 2^51267764 is an apocalyptic number.

It is an amenable number.

51267764 is a deficient number, since it is larger than the sum of its proper divisors (38600560).

51267764 is a wasteful number, since it uses less digits than its factorization.

51267764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21394 (or 21392 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 51267764 is about 7160.1511157237. The cubic root of 51267764 is about 371.4908535456.

The spelling of 51267764 in words is "fifty-one million, two hundred sixty-seven thousand, seven hundred sixty-four".