451055220 has 192 divisors, whose sum is σ = 1667506176. Its totient is φ = 88197120.

The previous prime is 451055201. The next prime is 451055233. The reversal of 451055220 is 22550154.

It is a happy number.

It is a super-2 number, since 2×451055220² = 406901622978496800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75669 + ... + 81411.

It is an arithmetic number, because the mean of its divisors is an integer number (8684928).

Almost surely, 2^451055220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451055220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833753088).

451055220 is an abundant number, since it is smaller than the sum of its proper divisors (1216450956).

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

451055220 is a wasteful number, since it uses less digits than its factorization.

451055220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790 (or 5788 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 451055220 is about 21238.0606459253. The cubic root of 451055220 is about 766.9079463225.

The spelling of 451055220 in words is "four hundred fifty-one million, fifty-five thousand, two hundred twenty".