45643444 has 24 divisors (see below), whose sum is σ = 99586368. Its totient is φ = 17783040.

The previous prime is 45643427. The next prime is 45643471. The reversal of 45643444 is 44434654.

It is a super-2 number, since 2×45643444² = 4166647960362272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73789 + ... + 74404.

It is an arithmetic number, because the mean of its divisors is an integer number (4149432).

Almost surely, 2^45643444 is an apocalyptic number.

45643444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

45643444 is an abundant number, since it is smaller than the sum of its proper divisors (53942924).

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

45643444 is a wasteful number, since it uses less digits than its factorization.

45643444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148215 (or 148213 counting only the distinct ones).

The product of its digits is 92160, while the sum is 34.

The square root of 45643444 is about 6755.9931912340. The cubic root of 45643444 is about 357.3766187107.

It can be divided in two parts, 4564 and 3444, that added together give a palindrome (8008).

The spelling of 45643444 in words is "forty-five million, six hundred forty-three thousand, four hundred forty-four".