451997546 has 64 divisors (see below), whose sum is σ = 939810816. Its totient is φ = 157291200.

The previous prime is 451997503. The next prime is 451997549. The reversal of 451997546 is 645799154.

It is a junction number, because it is equal to n+sod(n) for n = 451997494 and 451997503.

It is not an unprimeable number, because it can be changed into a prime (451997549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58421 + ... + 65703.

It is an arithmetic number, because the mean of its divisors is an integer number (14684544).

Almost surely, 2^451997546 is an apocalyptic number.

451997546 is an abundant number, since it is smaller than the sum of its proper divisors (487813270).

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

451997546 is a wasteful number, since it uses less digits than its factorization.

451997546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347.

The product of its digits is 1360800, while the sum is 50.

The square root of 451997546 is about 21260.2339121657. The cubic root of 451997546 is about 767.4416390104.

The spelling of 451997546 in words is "four hundred fifty-one million, nine hundred ninety-seven thousand, five hundred forty-six".