451545140 has 12 divisors (see below), whose sum is σ = 948244836. Its totient is φ = 180618048.

The previous prime is 451545103. The next prime is 451545173. The reversal of 451545140 is 41545154.

It can be written as a sum of positive squares in 2 ways, for example, as 237098404 + 214446736 = 15398^2 + 14644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11288609 + ... + 11288648.

It is an arithmetic number, because the mean of its divisors is an integer number (79020403).

Almost surely, 2^451545140 is an apocalyptic number.

It is an amenable number.

451545140 is an abundant number, since it is smaller than the sum of its proper divisors (496699696).

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

451545140 is a wasteful number, since it uses less digits than its factorization.

451545140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22577266 (or 22577264 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 451545140 is about 21249.5915254858. The cubic root of 451545140 is about 767.1855084878.

The spelling of 451545140 in words is "four hundred fifty-one million, five hundred forty-five thousand, one hundred forty".