117565751 has 2 divisors, whose sum is σ = 117565752. Its totient is φ = 117565750.

The previous prime is 117565729. The next prime is 117565759. The reversal of 117565751 is 157565711.

It is a strong prime.

It is an emirp because it is prime and its reverse (157565711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117565751 - 2¹⁸ = 117303607 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117565759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58782875 + 58782876.

It is an arithmetic number, because the mean of its divisors is an integer number (58782876).

Almost surely, 2^117565751 is an apocalyptic number.

117565751 is a deficient number, since it is larger than the sum of its proper divisors (1).

117565751 is an equidigital number, since it uses as much as digits as its factorization.

117565751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36750, while the sum is 38.

The square root of 117565751 is about 10842.7741376458. The cubic root of 117565751 is about 489.8843972740.

The spelling of 117565751 in words is "one hundred seventeen million, five hundred sixty-five thousand, seven hundred fifty-one".