451052644 has 81 divisors (see below), whose sum is σ = 967280139. Its totient is φ = 183496320.

The previous prime is 451052639. The next prime is 451052663. The reversal of 451052644 is 446250154.

It is a happy number.

The square root of 451052644 is 21238.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5336100 + 445716544 = 2310^2 + 21112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11001264 + ... + 11001304.

Almost surely, 2^451052644 is an apocalyptic number.

451052644 is the 21238-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451052644

451052644 is an abundant number, since it is smaller than the sum of its proper divisors (516227495).

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

451052644 is a wasteful number, since it uses less digits than its factorization.

451052644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The cubic root of 451052644 is about 766.9064863692.

The spelling of 451052644 in words is "four hundred fifty-one million, fifty-two thousand, six hundred forty-four".