451563842 has 32 divisors (see below), whose sum is σ = 725760000. Its totient is φ = 210100176.

The previous prime is 451563841. The next prime is 451563859. The reversal of 451563842 is 248365154.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 451563796 and 451563805.

It is not an unprimeable number, because it can be changed into a prime (451563841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077509 + ... + 1077927.

It is an arithmetic number, because the mean of its divisors is an integer number (22680000).

Almost surely, 2^451563842 is an apocalyptic number.

451563842 is a deficient number, since it is larger than the sum of its proper divisors (274196158).

451563842 is a wasteful number, since it uses less digits than its factorization.

451563842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its digits is 115200, while the sum is 38.

The square root of 451563842 is about 21250.0315764471. The cubic root of 451563842 is about 767.1961000500.

The spelling of 451563842 in words is "four hundred fifty-one million, five hundred sixty-three thousand, eight hundred forty-two".