291116452 has 12 divisors (see below), whose sum is σ = 555767856. Its totient is φ = 132325640.

The previous prime is 291116431. The next prime is 291116467. The reversal of 291116452 is 254611192.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308098 + ... + 3308185.

It is an arithmetic number, because the mean of its divisors is an integer number (46313988).

Almost surely, 2^291116452 is an apocalyptic number.

291116452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

291116452 is a deficient number, since it is larger than the sum of its proper divisors (264651404).

291116452 is a wasteful number, since it uses less digits than its factorization.

291116452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616298 (or 6616296 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 291116452 is about 17062.1350363898. The cubic root of 291116452 is about 662.7589225026.

The spelling of 291116452 in words is "two hundred ninety-one million, one hundred sixteen thousand, four hundred fifty-two".