490525851 has 4 divisors (see below), whose sum is σ = 654034472. Its totient is φ = 327017232.

The previous prime is 490525829. The next prime is 490525859. The reversal of 490525851 is 158525094.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 490525851 - 2⁶ = 490525787 is a prime.

It is a super-2 number, since 2×490525851² = 481231220998548402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490525859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81754306 + ... + 81754311.

It is an arithmetic number, because the mean of its divisors is an integer number (163508618).

Almost surely, 2^490525851 is an apocalyptic number.

490525851 is a deficient number, since it is larger than the sum of its proper divisors (163508621).

490525851 is a wasteful number, since it uses less digits than its factorization.

490525851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163508620.

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 490525851 is about 22147.8181995428. The cubic root of 490525851 is about 788.6554338552.

The spelling of 490525851 in words is "four hundred ninety million, five hundred twenty-five thousand, eight hundred fifty-one".