117961061 has 2 divisors, whose sum is σ = 117961062. Its totient is φ = 117961060.

The previous prime is 117961057. The next prime is 117961091. The reversal of 117961061 is 160169711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109516225 + 8444836 = 10465^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 117961061 - 2² = 117961057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117961091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58980530 + 58980531.

It is an arithmetic number, because the mean of its divisors is an integer number (58980531).

Almost surely, 2^117961061 is an apocalyptic number.

It is an amenable number.

117961061 is a deficient number, since it is larger than the sum of its proper divisors (1).

117961061 is an equidigital number, since it uses as much as digits as its factorization.

117961061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 117961061 is about 10860.9880305615. The cubic root of 117961061 is about 490.4328550528.

The spelling of 117961061 in words is "one hundred seventeen million, nine hundred sixty-one thousand, sixty-one".