491552 has 12 divisors (see below), whose sum is σ = 967806. Its totient is φ = 245760.

The previous prime is 491539. The next prime is 491581. The reversal of 491552 is 255194.

It can be written as a sum of positive squares in only one way, i.e., 364816 + 126736 = 604^2 + 356^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

491552 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7649 + ... + 7712.

2⁴⁹¹⁵⁵² is an apocalyptic number.

It is an amenable number.

491552 is a deficient number, since it is larger than the sum of its proper divisors (476254).

491552 is a wasteful number, since it uses less digits than its factorization.

491552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371 (or 15363 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 491552 is about 701.1076950084. The cubic root of 491552 is about 78.9204989887.

The spelling of 491552 in words is "four hundred ninety-one thousand, five hundred fifty-two".