451045240 has 64 divisors (see below), whose sum is σ = 1037836800. Its totient is φ = 176380032.

The previous prime is 451045213. The next prime is 451045253. The reversal of 451045240 is 42540154.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341301 + ... + 342619.

It is an arithmetic number, because the mean of its divisors is an integer number (16216200).

Almost surely, 2^451045240 is an apocalyptic number.

451045240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451045240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518918400).

451045240 is an abundant number, since it is smaller than the sum of its proper divisors (586791560).

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

451045240 is a wasteful number, since it uses less digits than its factorization.

451045240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 451045240 is about 21237.8256890860. The cubic root of 451045240 is about 766.9022901062.

Adding to 451045240 its reverse (42540154), we get a palindrome (493585394).

The spelling of 451045240 in words is "four hundred fifty-one million, forty-five thousand, two hundred forty".