455745521 has 24 divisors (see below), whose sum is σ = 586543680. Its totient is φ = 350095200.

The previous prime is 455745481. The next prime is 455745523. The reversal of 455745521 is 125547554.

It is not a de Polignac number, because 455745521 - 2²⁶ = 388636657 is a prime.

It is a super-2 number, since 2×455745521² = 415407959823122882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455745523) 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 23 ways as a sum of consecutive naturals, for example, 32315 + ... + 44223.

It is an arithmetic number, because the mean of its divisors is an integer number (24439320).

Almost surely, 2^455745521 is an apocalyptic number.

It is an amenable number.

455745521 is a deficient number, since it is larger than the sum of its proper divisors (130798159).

455745521 is a wasteful number, since it uses less digits than its factorization.

455745521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12005 (or 11998 counting only the distinct ones).

The product of its digits is 140000, while the sum is 38.

The square root of 455745521 is about 21348.1971369950. The cubic root of 455745521 is about 769.5570179279.

The spelling of 455745521 in words is "four hundred fifty-five million, seven hundred forty-five thousand, five hundred twenty-one".