451252440 has 48 divisors (see below), whose sum is σ = 1466571600. Its totient is φ = 120333888.

The previous prime is 451252427. The next prime is 451252447. The reversal of 451252440 is 44252154.

451252440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451252447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626380 + ... + 627099.

It is an arithmetic number, because the mean of its divisors is an integer number (30553575).

Almost surely, 2^451252440 is an apocalyptic number.

451252440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451252440 is an abundant number, since it is smaller than the sum of its proper divisors (1015319160).

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

451252440 is a wasteful number, since it uses less digits than its factorization.

451252440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253496 (or 1253489 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 451252440 is about 21242.7032178111. The cubic root of 451252440 is about 767.0197046614.

The spelling of 451252440 in words is "four hundred fifty-one million, two hundred fifty-two thousand, four hundred forty".