451335540 has 48 divisors (see below), whose sum is σ = 1272987072. Its totient is φ = 119475456.

The previous prime is 451335389. The next prime is 451335551. The reversal of 451335540 is 45533154.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 451335498 and 451335507.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19234 + ... + 35673.

It is an arithmetic number, because the mean of its divisors is an integer number (26520564).

Almost surely, 2^451335540 is an apocalyptic number.

It is an amenable number.

451335540 is an abundant number, since it is smaller than the sum of its proper divisors (821651532).

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

451335540 is a wasteful number, since it uses less digits than its factorization.

451335540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55056 (or 55054 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 451335540 is about 21244.6590935228. The cubic root of 451335540 is about 767.0667850533.

Adding to 451335540 its reverse (45533154), we get a palindrome (496868694).

The spelling of 451335540 in words is "four hundred fifty-one million, three hundred thirty-five thousand, five hundred forty".