51744731 has 2 divisors, whose sum is σ = 51744732. Its totient is φ = 51744730.

The previous prime is 51744727. The next prime is 51744751. The reversal of 51744731 is 13744715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51744731 - 2² = 51744727 is a prime.

It is a super-2 number, since 2×51744731² = 5355034372524722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51744701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25872365 + 25872366.

It is an arithmetic number, because the mean of its divisors is an integer number (25872366).

Almost surely, 2^51744731 is an apocalyptic number.

51744731 is a deficient number, since it is larger than the sum of its proper divisors (1).

51744731 is an equidigital number, since it uses as much as digits as its factorization.

51744731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 51744731 is about 7193.3810548309. The cubic root of 51744731 is about 372.6393478921.

The spelling of 51744731 in words is "fifty-one million, seven hundred forty-four thousand, seven hundred thirty-one".