117056521 has 2 divisors, whose sum is σ = 117056522. Its totient is φ = 117056520.

The previous prime is 117056519. The next prime is 117056539. The reversal of 117056521 is 125650711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97298496 + 19758025 = 9864^2 + 4445^2 .

It is a cyclic number.

It is not a de Polignac number, because 117056521 - 2¹ = 117056519 is a prime.

Together with 117056519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 117056521.

It is not a weakly prime, because it can be changed into another prime (117056551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58528260 + 58528261.

It is an arithmetic number, because the mean of its divisors is an integer number (58528261).

Almost surely, 2^117056521 is an apocalyptic number.

It is an amenable number.

117056521 is a deficient number, since it is larger than the sum of its proper divisors (1).

117056521 is an equidigital number, since it uses as much as digits as its factorization.

117056521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 117056521 is about 10819.2661950800. The cubic root of 117056521 is about 489.1760705756.

The spelling of 117056521 in words is "one hundred seventeen million, fifty-six thousand, five hundred twenty-one".