491554804 has 24 divisors (see below), whose sum is σ = 966672000. Its totient is φ = 217006944.

The previous prime is 491554787. The next prime is 491554823. The reversal of 491554804 is 408455194.

It is a super-2 number, since 2×491554804² = 483252250670956832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204304 + ... + 206695.

It is an arithmetic number, because the mean of its divisors is an integer number (40278000).

Almost surely, 2^491554804 is an apocalyptic number.

It is an amenable number.

491554804 is a deficient number, since it is larger than the sum of its proper divisors (475117196).

491554804 is a wasteful number, since it uses less digits than its factorization.

491554804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411039 (or 411037 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 491554804 is about 22171.0352487203. The cubic root of 491554804 is about 789.2064905260.

The spelling of 491554804 in words is "four hundred ninety-one million, five hundred fifty-four thousand, eight hundred four".