117772547 has 4 divisors (see below), whose sum is σ = 117818256. Its totient is φ = 117726840.

The previous prime is 117772511. The next prime is 117772559. The reversal of 117772547 is 745277711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745277711 = 7687 ⋅96953.

It is a cyclic number.

It is not a de Polignac number, because 117772547 - 2¹⁸ = 117510403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117772597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18743 + ... + 24224.

It is an arithmetic number, because the mean of its divisors is an integer number (29454564).

Almost surely, 2^117772547 is an apocalyptic number.

117772547 is a deficient number, since it is larger than the sum of its proper divisors (45709).

117772547 is an equidigital number, since it uses as much as digits as its factorization.

117772547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45708.

The product of its digits is 96040, while the sum is 41.

The square root of 117772547 is about 10852.3060682972. The cubic root of 117772547 is about 490.1714615831.

The spelling of 117772547 in words is "one hundred seventeen million, seven hundred seventy-two thousand, five hundred forty-seven".