491132529 has 12 divisors (see below), whose sum is σ = 713768016. Its totient is φ = 325411992.

The previous prime is 491132519. The next prime is 491132557. The reversal of 491132529 is 925231194.

It is not a de Polignac number, because 491132529 - 2⁴ = 491132513 is a prime.

It is a super-2 number, since 2×491132529² = 482422322083871682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491132493 and 491132502.

It is not an unprimeable number, because it can be changed into a prime (491132519) 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, 165927 + ... + 168860.

It is an arithmetic number, because the mean of its divisors is an integer number (59480668).

Almost surely, 2^491132529 is an apocalyptic number.

It is an amenable number.

491132529 is a deficient number, since it is larger than the sum of its proper divisors (222635487).

491132529 is a wasteful number, since it uses less digits than its factorization.

491132529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334956 (or 334953 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 491132529 is about 22161.5100794147. The cubic root of 491132529 is about 788.9804339098.

The spelling of 491132529 in words is "four hundred ninety-one million, one hundred thirty-two thousand, five hundred twenty-nine".