451543420 has 48 divisors (see below), whose sum is σ = 960261120. Its totient is φ = 178343424.

The previous prime is 451543399. The next prime is 451543441. The reversal of 451543420 is 24345154.

It is an interprime number because it is at equal distance from previous prime (451543399) and next prime (451543441).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987832 + ... + 988288.

It is an arithmetic number, because the mean of its divisors is an integer number (20005440).

Almost surely, 2^451543420 is an apocalyptic number.

It is an amenable number.

451543420 is an abundant number, since it is smaller than the sum of its proper divisors (508717700).

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

451543420 is a wasteful number, since it uses less digits than its factorization.

451543420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 451543420 is about 21249.5510540811. The cubic root of 451543420 is about 767.1845343802.

Adding to 451543420 its reverse (24345154), we get a palindrome (475888574).

The spelling of 451543420 in words is "four hundred fifty-one million, five hundred forty-three thousand, four hundred twenty".