455126621 has 4 divisors (see below), whose sum is σ = 455170044. Its totient is φ = 455083200.

The previous prime is 455126563. The next prime is 455126641. The reversal of 455126621 is 126621554.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 126621554 = 2 ⋅63310777.

It can be written as a sum of positive squares in 2 ways, for example, as 223173721 + 231952900 = 14939^2 + 15230^2 .

It is a cyclic number.

It is not a de Polignac number, because 455126621 - 2¹⁰ = 455125597 is a prime.

It is a super-2 number, since 2×455126621² = 414280482285755282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455126641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4811 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (113792511).

Almost surely, 2^455126621 is an apocalyptic number.

It is an amenable number.

455126621 is a deficient number, since it is larger than the sum of its proper divisors (43423).

455126621 is a wasteful number, since it uses less digits than its factorization.

455126621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43422.

The product of its digits is 14400, while the sum is 32.

The square root of 455126621 is about 21333.6968432571. The cubic root of 455126621 is about 769.2085086730.

The spelling of 455126621 in words is "four hundred fifty-five million, one hundred twenty-six thousand, six hundred twenty-one".