451563630 has 32 divisors (see below), whose sum is σ = 1238575104. Its totient is φ = 103214496.

The previous prime is 451563599. The next prime is 451563631. The reversal of 451563630 is 36365154.

It is a junction number, because it is equal to n+sod(n) for n = 451563591 and 451563600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451563631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074942 + ... + 1075361.

It is an arithmetic number, because the mean of its divisors is an integer number (38705472).

Almost surely, 2^451563630 is an apocalyptic number.

451563630 is an abundant number, since it is smaller than the sum of its proper divisors (787011474).

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

451563630 is a wasteful number, since it uses less digits than its factorization.

451563630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150320.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 451563630 is about 21250.0265882187. The cubic root of 451563630 is about 767.1959799890.

The spelling of 451563630 in words is "four hundred fifty-one million, five hundred sixty-three thousand, six hundred thirty".