51268736 has 32 divisors (see below), whose sum is σ = 108149580. Its totient is φ = 24125440.

The previous prime is 51268733. The next prime is 51268739. The reversal of 51268736 is 63786215.

It is an interprime number because it is at equal distance from previous prime (51268733) and next prime (51268739).

It can be written as a sum of positive squares in 2 ways, for example, as 51265600 + 3136 = 7160^2 + 56^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 51268736.

It is not an unprimeable number, because it can be changed into a prime (51268733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9605 + ... + 13956.

Almost surely, 2^51268736 is an apocalyptic number.

It is an amenable number.

51268736 is an abundant number, since it is smaller than the sum of its proper divisors (56880844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51268736 is a wasteful number, since it uses less digits than its factorization.

51268736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23592 (or 23580 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 51268736 is about 7160.2189910644. The cubic root of 51268736 is about 371.4932012641.

The spelling of 51268736 in words is "fifty-one million, two hundred sixty-eight thousand, seven hundred thirty-six".