455412521 has 4 divisors (see below), whose sum is σ = 455675844. Its totient is φ = 455149200.

The previous prime is 455412493. The next prime is 455412553. The reversal of 455412521 is 125214554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 190992400 + 264420121 = 13820^2 + 16261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455412521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455412721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129050 + ... + 132531.

It is an arithmetic number, because the mean of its divisors is an integer number (113918961).

Almost surely, 2^455412521 is an apocalyptic number.

It is an amenable number.

455412521 is a deficient number, since it is larger than the sum of its proper divisors (263323).

455412521 is a wasteful number, since it uses less digits than its factorization.

455412521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263322.

The product of its digits is 8000, while the sum is 29.

The square root of 455412521 is about 21340.3964583604. The cubic root of 455412521 is about 769.3695412807.

The spelling of 455412521 in words is "four hundred fifty-five million, four hundred twelve thousand, five hundred twenty-one".