455631421 has 16 divisors (see below), whose sum is σ = 526032000. Its totient is φ = 386578368.

The previous prime is 455631389. The next prime is 455631439. The reversal of 455631421 is 124136554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 455631421 - 2⁵ = 455631389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455631461) 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, 405166 + ... + 406288.

It is an arithmetic number, because the mean of its divisors is an integer number (32877000).

Almost surely, 2^455631421 is an apocalyptic number.

It is an amenable number.

455631421 is a deficient number, since it is larger than the sum of its proper divisors (70400579).

455631421 is a wasteful number, since it uses less digits than its factorization.

455631421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668.

The product of its digits is 14400, while the sum is 31.

The square root of 455631421 is about 21345.5246129019. The cubic root of 455631421 is about 769.4927907219.

Adding to 455631421 its reverse (124136554), we get a palindrome (579767975).

The spelling of 455631421 in words is "four hundred fifty-five million, six hundred thirty-one thousand, four hundred twenty-one".