117772549 has 4 divisors (see below), whose sum is σ = 124700364. Its totient is φ = 110844736.

The previous prime is 117772511. The next prime is 117772559. The reversal of 117772549 is 945277711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74080449 + 43692100 = 8607^2 + 6610^2 .

It is a cyclic number.

It is not a de Polignac number, because 117772549 - 2⁹ = 117772037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117772559) 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, 3463882 + ... + 3463915.

It is an arithmetic number, because the mean of its divisors is an integer number (31175091).

Almost surely, 2^117772549 is an apocalyptic number.

It is an amenable number.

117772549 is a deficient number, since it is larger than the sum of its proper divisors (6927815).

117772549 is an equidigital number, since it uses as much as digits as its factorization.

117772549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927814.

The product of its digits is 123480, while the sum is 43.

The square root of 117772549 is about 10852.3061604435. The cubic root of 117772549 is about 490.1714643578.

The spelling of 117772549 in words is "one hundred seventeen million, seven hundred seventy-two thousand, five hundred forty-nine".