451540230 has 64 divisors (see below), whose sum is σ = 1178504640. Its totient is φ = 110260224.

The previous prime is 451540223. The next prime is 451540241. The reversal of 451540230 is 32045154.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 451540230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6906 + ... + 30834.

It is an arithmetic number, because the mean of its divisors is an integer number (18414135).

Almost surely, 2^451540230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451540230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589252320).

451540230 is an abundant number, since it is smaller than the sum of its proper divisors (726964410).

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

451540230 is a wasteful number, since it uses less digits than its factorization.

451540230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23993.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 451540230 is about 21249.4759935392. The cubic root of 451540230 is about 767.1827277437.

Adding to 451540230 its reverse (32045154), we get a palindrome (483585384).

The spelling of 451540230 in words is "four hundred fifty-one million, five hundred forty thousand, two hundred thirty".