44155145 has 16 divisors (see below), whose sum is σ = 56547840. Its totient is φ = 33001344.

The previous prime is 44155141. The next prime is 44155159. The reversal of 44155145 is 54155144.

It is a cyclic number.

It is not a de Polignac number, because 44155145 - 2² = 44155141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44155141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3752 + ... + 10118.

It is an arithmetic number, because the mean of its divisors is an integer number (3534240).

Almost surely, 2^44155145 is an apocalyptic number.

It is an amenable number.

44155145 is a deficient number, since it is larger than the sum of its proper divisors (12392695).

44155145 is a wasteful number, since it uses less digits than its factorization.

44155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464.

The product of its digits is 8000, while the sum is 29.

The square root of 44155145 is about 6644.9337844707. The cubic root of 44155145 is about 353.4492830763.

Subtracting 44155145 from its reverse (54155144), we obtain a palindrome (9999999).

The spelling of 44155145 in words is "forty-four million, one hundred fifty-five thousand, one hundred forty-five".