44531138 has 4 divisors (see below), whose sum is σ = 66796710. Its totient is φ = 22265568.

The previous prime is 44531131. The next prime is 44531141. The reversal of 44531138 is 83113544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44528929 + 2209 = 6673^2 + 47^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 44531138.

It is not an unprimeable number, because it can be changed into a prime (44531131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11132783 + ... + 11132786.

Almost surely, 2^44531138 is an apocalyptic number.

44531138 is a deficient number, since it is larger than the sum of its proper divisors (22265572).

44531138 is a wasteful number, since it uses less digits than its factorization.

44531138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22265571.

The product of its digits is 5760, while the sum is 29.

The square root of 44531138 is about 6673.1655157054. The cubic root of 44531138 is about 354.4496875966.

The spelling of 44531138 in words is "forty-four million, five hundred thirty-one thousand, one hundred thirty-eight".