45287643 has 32 divisors (see below), whose sum is σ = 66375936. Its totient is φ = 27353088.

The previous prime is 45287639. The next prime is 45287689. The reversal of 45287643 is 34678254.

It is a happy number.

45287643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45287643 - 2² = 45287639 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45287603) 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 31 ways as a sum of consecutive naturals, for example, 234555 + ... + 234747.

It is an arithmetic number, because the mean of its divisors is an integer number (2074248).

Almost surely, 2^45287643 is an apocalyptic number.

45287643 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

45287643 is a deficient number, since it is larger than the sum of its proper divisors (21088293).

45287643 is a wasteful number, since it uses less digits than its factorization.

45287643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 161280, while the sum is 39.

The square root of 45287643 is about 6729.6094240305. The cubic root of 45287643 is about 356.4455846923.

The spelling of 45287643 in words is "forty-five million, two hundred eighty-seven thousand, six hundred forty-three".