117561057 has 8 divisors (see below), whose sum is σ = 157876320. Its totient is φ = 77809920.

The previous prime is 117561047. The next prime is 117561077. The reversal of 117561057 is 750165711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117561057 - 2⁷ = 117560929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117561047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140544 + ... + 141377.

It is an arithmetic number, because the mean of its divisors is an integer number (19734540).

Almost surely, 2^117561057 is an apocalyptic number.

It is an amenable number.

117561057 is a deficient number, since it is larger than the sum of its proper divisors (40315263).

117561057 is a wasteful number, since it uses less digits than its factorization.

117561057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282063.

The product of its (nonzero) digits is 7350, while the sum is 33.

The square root of 117561057 is about 10842.5576779651. The cubic root of 117561057 is about 489.8778773821.

The spelling of 117561057 in words is "one hundred seventeen million, five hundred sixty-one thousand, fifty-seven".