117650521 has 2 divisors, whose sum is σ = 117650522. Its totient is φ = 117650520.

The previous prime is 117650509. The next prime is 117650551. The reversal of 117650521 is 125056711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 37994896 = 8925^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 117650521 - 2⁹ = 117650009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117650521.

It is not a weakly prime, because it can be changed into another prime (117650551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58825260 + 58825261.

It is an arithmetic number, because the mean of its divisors is an integer number (58825261).

Almost surely, 2^117650521 is an apocalyptic number.

It is an amenable number.

117650521 is a deficient number, since it is larger than the sum of its proper divisors (1).

117650521 is an equidigital number, since it uses as much as digits as its factorization.

117650521 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 117650521 is about 10846.6824882081. The cubic root of 117650521 is about 490.0021116111.

The spelling of 117650521 in words is "one hundred seventeen million, six hundred fifty thousand, five hundred twenty-one".