451313540 has 24 divisors (see below), whose sum is σ = 954582720. Its totient is φ = 179225568.

The previous prime is 451313537. The next prime is 451313543. The reversal of 451313540 is 45313154.

It is an interprime number because it is at equal distance from previous prime (451313537) and next prime (451313543).

It is a super-2 number, since 2×451313540² = 407367822774663200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (451313543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78392 + ... + 83951.

It is an arithmetic number, because the mean of its divisors is an integer number (39774280).

Almost surely, 2^451313540 is an apocalyptic number.

It is an amenable number.

451313540 is an abundant number, since it is smaller than the sum of its proper divisors (503269180).

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

451313540 is a wasteful number, since it uses less digits than its factorization.

451313540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162491 (or 162489 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 451313540 is about 21244.1413100177. The cubic root of 451313540 is about 767.0543214928.

Adding to 451313540 its reverse (45313154), we get a palindrome (496626694).

The spelling of 451313540 in words is "four hundred fifty-one million, three hundred thirteen thousand, five hundred forty".