51012737 has 4 divisors (see below), whose sum is σ = 51037140. Its totient is φ = 50988336.

The previous prime is 51012697. The next prime is 51012761. The reversal of 51012737 is 73721015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44742721 + 6270016 = 6689^2 + 2504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51012737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51012037) 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, 8738 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (12759285).

Almost surely, 2^51012737 is an apocalyptic number.

It is an amenable number.

51012737 is a deficient number, since it is larger than the sum of its proper divisors (24403).

51012737 is a wasteful number, since it uses less digits than its factorization.

51012737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 51012737 is about 7142.3201412426. The cubic root of 51012737 is about 370.8738464288.

The spelling of 51012737 in words is "fifty-one million, twelve thousand, seven hundred thirty-seven".