451032520 has 16 divisors (see below), whose sum is σ = 1014823260. Its totient is φ = 180412992.

The previous prime is 451032511. The next prime is 451032577. The reversal of 451032520 is 25230154.

It can be written as a sum of positive squares in 2 ways, for example, as 431725284 + 19307236 = 20778^2 + 4394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451032491 and 451032500.

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, 5637867 + ... + 5637946.

Almost surely, 2^451032520 is an apocalyptic number.

451032520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451032520 is an abundant number, since it is smaller than the sum of its proper divisors (563790740).

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

451032520 is a wasteful number, since it uses less digits than its factorization.

451032520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11275824 (or 11275820 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 451032520 is about 21237.5262212905. The cubic root of 451032520 is about 766.8950808597.

Adding to 451032520 its reverse (25230154), we get a palindrome (476262674).

The spelling of 451032520 in words is "four hundred fifty-one million, thirty-two thousand, five hundred twenty".