117791545 has 8 divisors (see below), whose sum is σ = 148789440. Its totient is φ = 89273520.

The previous prime is 117791501. The next prime is 117791573. The reversal of 117791545 is 545197711.

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

It is not a de Polignac number, because 117791545 - 2¹⁵ = 117758777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117791498 and 117791507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619861 + ... + 620050.

It is an arithmetic number, because the mean of its divisors is an integer number (18598680).

Almost surely, 2^117791545 is an apocalyptic number.

It is an amenable number.

117791545 is a deficient number, since it is larger than the sum of its proper divisors (30997895).

117791545 is a wasteful number, since it uses less digits than its factorization.

117791545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239935.

The product of its digits is 44100, while the sum is 40.

The square root of 117791545 is about 10853.1813308357. The cubic root of 117791545 is about 490.1978168388.

It can be divided in two parts, 117791 and 545, that added together give a square (118336 = 344²).

The spelling of 117791545 in words is "one hundred seventeen million, seven hundred ninety-one thousand, five hundred forty-five".