491032155 has 8 divisors (see below), whose sum is σ = 785651472. Its totient is φ = 261883808.

The previous prime is 491032151. The next prime is 491032169. The reversal of 491032155 is 551230194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491032155 - 2² = 491032151 is a prime.

It is a super-2 number, since 2×491032155² = 482225154487888050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (491032151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16367724 + ... + 16367753.

It is an arithmetic number, because the mean of its divisors is an integer number (98206434).

Almost surely, 2^491032155 is an apocalyptic number.

491032155 is a deficient number, since it is larger than the sum of its proper divisors (294619317).

491032155 is a wasteful number, since it uses less digits than its factorization.

491032155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32735485.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 491032155 is about 22159.2453616995. The cubic root of 491032155 is about 788.9266816040.

The spelling of 491032155 in words is "four hundred ninety-one million, thirty-two thousand, one hundred fifty-five".