451921454 has 4 divisors (see below), whose sum is σ = 677882184. Its totient is φ = 225960726.

The previous prime is 451921453. The next prime is 451921469. The reversal of 451921454 is 454129154.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451921453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112980362 + ... + 112980365.

It is an arithmetic number, because the mean of its divisors is an integer number (169470546).

Almost surely, 2^451921454 is an apocalyptic number.

451921454 is a deficient number, since it is larger than the sum of its proper divisors (225960730).

451921454 is a wasteful number, since it uses less digits than its factorization.

451921454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225960729.

The product of its digits is 28800, while the sum is 35.

The square root of 451921454 is about 21258.4442986781. Note that the first 3 decimals coincide. The cubic root of 451921454 is about 767.3985713382.

The spelling of 451921454 in words is "four hundred fifty-one million, nine hundred twenty-one thousand, four hundred fifty-four".