451430252 has 24 divisors (see below), whose sum is σ = 972312096. Its totient is φ = 178587648.

The previous prime is 451430251. The next prime is 451430267. The reversal of 451430252 is 252034154.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (451430251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619733 + ... + 620460.

It is an arithmetic number, because the mean of its divisors is an integer number (40513004).

Almost surely, 2^451430252 is an apocalyptic number.

It is an amenable number.

451430252 is an abundant number, since it is smaller than the sum of its proper divisors (520881844).

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

451430252 is a wasteful number, since it uses less digits than its factorization.

451430252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240217 (or 1240215 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 451430252 is about 21246.8880544893. Note that the first 3 decimals coincide. The cubic root of 451430252 is about 767.1204371899.

The spelling of 451430252 in words is "four hundred fifty-one million, four hundred thirty thousand, two hundred fifty-two".