451240156 has 12 divisors (see below), whose sum is σ = 800488192. Its totient is φ = 222529248.

The previous prime is 451240147. The next prime is 451240157. The reversal of 451240156 is 651042154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451240157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772380 + ... + 772963.

Almost surely, 2^451240156 is an apocalyptic number.

It is an amenable number.

451240156 is a deficient number, since it is larger than the sum of its proper divisors (349248036).

451240156 is a wasteful number, since it uses less digits than its factorization.

451240156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545420 (or 1545418 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 451240156 is about 21242.4140812668. The cubic root of 451240156 is about 767.0127446580.

The spelling of 451240156 in words is "four hundred fifty-one million, two hundred forty thousand, one hundred fifty-six".