451381552 has 20 divisors (see below), whose sum is σ = 925996536. Its totient is φ = 212414720.

The previous prime is 451381547. The next prime is 451381571. The reversal of 451381552 is 255183154.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829474 + ... + 830017.

Almost surely, 2^451381552 is an apocalyptic number.

It is an amenable number.

451381552 is an abundant number, since it is smaller than the sum of its proper divisors (474614984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451381552 is a wasteful number, since it uses less digits than its factorization.

451381552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659516 (or 1659510 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The square root of 451381552 is about 21245.7419733932. The cubic root of 451381552 is about 767.0928507144.

The spelling of 451381552 in words is "four hundred fifty-one million, three hundred eighty-one thousand, five hundred fifty-two".