457521990 has 32 divisors (see below), whose sum is σ = 1116668160. Its totient is φ = 119937504.

The previous prime is 457521959. The next prime is 457522007. The reversal of 457521990 is 99125754.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127474 + ... + 131013.

It is an arithmetic number, because the mean of its divisors is an integer number (34895880).

Almost surely, 2^457521990 is an apocalyptic number.

457521990 is an abundant number, since it is smaller than the sum of its proper divisors (659146170).

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

457521990 is a wasteful number, since it uses less digits than its factorization.

457521990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258556.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 457521990 is about 21389.7636733088. The cubic root of 457521990 is about 770.5556174210. Note that the first 3 decimals are identical.

It can be divided in two parts, 4575 and 21990, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 457521990 in words is "four hundred fifty-seven million, five hundred twenty-one thousand, nine hundred ninety".