117880545 has 16 divisors (see below), whose sum is σ = 189332352. Its totient is φ = 62628480.

The previous prime is 117880493. The next prime is 117880549. The reversal of 117880545 is 545088711.

It is not a de Polignac number, because 117880545 - 2¹⁷ = 117749473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117880549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10996 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (11833272).

Almost surely, 2^117880545 is an apocalyptic number.

117880545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117880545 is a deficient number, since it is larger than the sum of its proper divisors (71451807).

117880545 is a wasteful number, since it uses less digits than its factorization.

117880545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30152.

The product of its (nonzero) digits is 44800, while the sum is 39.

The square root of 117880545 is about 10857.2807369065. The cubic root of 117880545 is about 490.3212456818.

The spelling of 117880545 in words is "one hundred seventeen million, eight hundred eighty thousand, five hundred forty-five".