51755317 has 2 divisors, whose sum is σ = 51755318. Its totient is φ = 51755316.

The previous prime is 51755311. The next prime is 51755339. The reversal of 51755317 is 71355715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 1681 = 7194^2 + 41^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51755317 is a prime.

It is a super-2 number, since 2×51755317² = 5357225675540978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51755311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25877658 + 25877659.

It is an arithmetic number, because the mean of its divisors is an integer number (25877659).

Almost surely, 2^51755317 is an apocalyptic number.

It is an amenable number.

51755317 is a deficient number, since it is larger than the sum of its proper divisors (1).

51755317 is an equidigital number, since it uses as much as digits as its factorization.

51755317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18375, while the sum is 34.

The square root of 51755317 is about 7194.1168325236. The cubic root of 51755317 is about 372.6647578297.

The spelling of 51755317 in words is "fifty-one million, seven hundred fifty-five thousand, three hundred seventeen".