51012736 has 32 divisors (see below), whose sum is σ = 102005100. Its totient is φ = 25411584.

The previous prime is 51012697. The next prime is 51012761. The reversal of 51012736 is 63721015.

It can be written as a sum of positive squares in 2 ways, for example, as 46785600 + 4227136 = 6840^2 + 2056^2 .

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 51012736.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44620 + ... + 45748.

Almost surely, 2^51012736 is an apocalyptic number.

It is an amenable number.

51012736 is a deficient number, since it is larger than the sum of its proper divisors (50992364).

51012736 is a wasteful number, since it uses less digits than its factorization.

51012736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 51012736 is about 7142.3200712374. The cubic root of 51012736 is about 370.8738440054.

The spelling of 51012736 in words is "fifty-one million, twelve thousand, seven hundred thirty-six".