491575520 has 48 divisors (see below), whose sum is σ = 1201404960. Its totient is φ = 189848064.

The previous prime is 491575493. The next prime is 491575523. The reversal of 491575520 is 25575194.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491575523) 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, 48332 + ... + 57611.

It is an arithmetic number, because the mean of its divisors is an integer number (25029270).

Almost surely, 2^491575520 is an apocalyptic number.

491575520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491575520 is an abundant number, since it is smaller than the sum of its proper divisors (709829440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491575520 is a wasteful number, since it uses less digits than its factorization.

491575520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105987 (or 105979 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 491575520 is about 22171.5024299212. The cubic root of 491575520 is about 789.2175770972.

The spelling of 491575520 in words is "four hundred ninety-one million, five hundred seventy-five thousand, five hundred twenty".