51236737 has 4 divisors (see below), whose sum is σ = 51351300. Its totient is φ = 51122176.

The previous prime is 51236701. The next prime is 51236747. The reversal of 51236737 is 73763215.

51236737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 14258176 + 36978561 = 3776^2 + 6081^2 .

It is a cyclic number.

It is not a de Polignac number, because 51236737 - 2⁷ = 51236609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51236747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56608 + ... + 57505.

It is an arithmetic number, because the mean of its divisors is an integer number (12837825).

Almost surely, 2^51236737 is an apocalyptic number.

It is an amenable number.

51236737 is a deficient number, since it is larger than the sum of its proper divisors (114563).

51236737 is a wasteful number, since it uses less digits than its factorization.

51236737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114562.

The product of its digits is 26460, while the sum is 34.

The square root of 51236737 is about 7157.9841435980. The cubic root of 51236737 is about 371.4158969400.

It can be divided in two parts, 512 and 36737, that added together give a square (37249 = 193²).

The spelling of 51236737 in words is "fifty-one million, two hundred thirty-six thousand, seven hundred thirty-seven".