491051115 has 12 divisors (see below), whose sum is σ = 851155344. Its totient is φ = 261893904.

The previous prime is 491051111. The next prime is 491051149. The reversal of 491051115 is 511150194.

It is not a de Polignac number, because 491051115 - 2² = 491051111 is a prime.

It is a super-2 number, since 2×491051115² = 482262395085486450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (491051111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5456079 + ... + 5456168.

It is an arithmetic number, because the mean of its divisors is an integer number (70929612).

Almost surely, 2^491051115 is an apocalyptic number.

491051115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

491051115 is a deficient number, since it is larger than the sum of its proper divisors (360104229).

491051115 is a wasteful number, since it uses less digits than its factorization.

491051115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912258 (or 10912255 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 491051115 is about 22159.6731699725. The cubic root of 491051115 is about 788.9368356283.

The spelling of 491051115 in words is "four hundred ninety-one million, fifty-one thousand, one hundred fifteen".