117280545 has 16 divisors (see below), whose sum is σ = 187991232. Its totient is φ = 62435520.

The previous prime is 117280543. The next prime is 117280567. The reversal of 117280545 is 545082711.

It is not a de Polignac number, because 117280545 - 2¹ = 117280543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117280543) 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, 1719 + ... + 15411.

It is an arithmetic number, because the mean of its divisors is an integer number (11749452).

Almost surely, 2^117280545 is an apocalyptic number.

117280545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117280545 is a deficient number, since it is larger than the sum of its proper divisors (70710687).

117280545 is a wasteful number, since it uses less digits than its factorization.

117280545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14272.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 117280545 is about 10829.6142590584. The cubic root of 117280545 is about 489.4879351450.

The spelling of 117280545 in words is "one hundred seventeen million, two hundred eighty thousand, five hundred forty-five".