451442500 has 60 divisors (see below), whose sum is σ = 991932480. Its totient is φ = 179716000.

The previous prime is 451442479. The next prime is 451442521. The reversal of 451442500 is 5244154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (451442479) and next prime (451442521).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 897249 + ... + 897751.

It is an arithmetic number, because the mean of its divisors is an integer number (16532208).

Almost surely, 2^451442500 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 451442500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495966240).

451442500 is an abundant number, since it is smaller than the sum of its proper divisors (540489980).

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

451442500 is a wasteful number, since it uses less digits than its factorization.

451442500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 451442500 is about 21247.1762829793. The cubic root of 451442500 is about 767.1273748479.

Adding to 451442500 its reverse (5244154), we get a palindrome (456686654).

The spelling of 451442500 in words is "four hundred fifty-one million, four hundred forty-two thousand, five hundred".