44137745 has 4 divisors (see below), whose sum is σ = 52965300. Its totient is φ = 35310192.

The previous prime is 44137733. The next prime is 44137757. The reversal of 44137745 is 54773144.

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

It is an interprime number because it is at equal distance from previous prime (44137733) and next prime (44137757).

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 36917776 = 2687^2 + 6076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44137745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4413770 + ... + 4413779.

It is an arithmetic number, because the mean of its divisors is an integer number (13241325).

Almost surely, 2^44137745 is an apocalyptic number.

It is an amenable number.

44137745 is a deficient number, since it is larger than the sum of its proper divisors (8827555).

44137745 is an equidigital number, since it uses as much as digits as its factorization.

44137745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8827554.

The product of its digits is 47040, while the sum is 35.

The square root of 44137745 is about 6643.6243873356. The cubic root of 44137745 is about 353.4028496385.

Subtracting from 44137745 its sum of digits (35), we obtain a triangular number (44137710 = T₉₃₉₅).

The spelling of 44137745 in words is "forty-four million, one hundred thirty-seven thousand, seven hundred forty-five".