491155527 has 16 divisors (see below), whose sum is σ = 662296320. Its totient is φ = 323745792.

The previous prime is 491155507. The next prime is 491155541. The reversal of 491155527 is 725551194.

It is not a de Polignac number, because 491155527 - 2⁶ = 491155463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491155507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104878 + ... + 109460.

It is an arithmetic number, because the mean of its divisors is an integer number (41393520).

Almost surely, 2^491155527 is an apocalyptic number.

491155527 is a deficient number, since it is larger than the sum of its proper divisors (171140793).

491155527 is a wasteful number, since it uses less digits than its factorization.

491155527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982.

The product of its digits is 63000, while the sum is 39.

The square root of 491155527 is about 22162.0289459246. The cubic root of 491155527 is about 788.9927487724.

The spelling of 491155527 in words is "four hundred ninety-one million, one hundred fifty-five thousand, five hundred twenty-seven".