455223981 has 16 divisors (see below), whose sum is σ = 635266944. Its totient is φ = 289411584.

The previous prime is 455223973. The next prime is 455224009. The reversal of 455223981 is 189322554.

It is not a de Polignac number, because 455223981 - 2³ = 455223973 is a prime.

It is a super-2 number, since 2×455223981² = 414457745754976722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455223941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13465 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (39704184).

Almost surely, 2^455223981 is an apocalyptic number.

It is an amenable number.

455223981 is a deficient number, since it is larger than the sum of its proper divisors (180042963).

455223981 is a wasteful number, since it uses less digits than its factorization.

455223981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19940.

The product of its digits is 86400, while the sum is 39.

The square root of 455223981 is about 21335.9785573571. The cubic root of 455223981 is about 769.2633540702.

The spelling of 455223981 in words is "four hundred fifty-five million, two hundred twenty-three thousand, nine hundred eighty-one".