451995156 has 36 divisors (see below), whose sum is σ = 1143230452. Its totient is φ = 150574464.

The previous prime is 451995151. The next prime is 451995239. The reversal of 451995156 is 651599154.

It is a happy number.

451995156 is a `hidden beast` number, since 45 + 1 + 99 + 515 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 399200400 + 52794756 = 19980^2 + 7266^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451995151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86490 + ... + 91566.

Almost surely, 2^451995156 is an apocalyptic number.

It is an amenable number.

451995156 is an abundant number, since it is smaller than the sum of its proper divisors (691235296).

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

451995156 is a wasteful number, since it uses less digits than its factorization.

451995156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560 (or 7555 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 451995156 is about 21260.1777038669. The cubic root of 451995156 is about 767.4402863564.

The spelling of 451995156 in words is "four hundred fifty-one million, nine hundred ninety-five thousand, one hundred fifty-six".