490152221 has 6 divisors (see below), whose sum is σ = 530756730. Its totient is φ = 452448048.

The previous prime is 490152203. The next prime is 490152233. The reversal of 490152221 is 122251094.

It can be written as a sum of positive squares in 3 ways, for example, as 70476025 + 419676196 = 8395^2 + 20486^2 .

It is not a de Polignac number, because 490152221 - 2²² = 485957917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490152521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1449986 + ... + 1450323.

It is an arithmetic number, because the mean of its divisors is an integer number (88459455).

Almost surely, 2^490152221 is an apocalyptic number.

It is an amenable number.

490152221 is a deficient number, since it is larger than the sum of its proper divisors (40604509).

490152221 is a wasteful number, since it uses less digits than its factorization.

490152221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900335 (or 2900322 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 490152221 is about 22139.3816760993. The cubic root of 490152221 is about 788.4551452767.

The spelling of 490152221 in words is "four hundred ninety million, one hundred fifty-two thousand, two hundred twenty-one".