44513561 has 4 divisors (see below), whose sum is σ = 46856400. Its totient is φ = 42170724.

The previous prime is 44513543. The next prime is 44513611. The reversal of 44513561 is 16531544.

It is a happy number.

44513561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44513561 is a prime.

It is a super-2 number, since 2×44513561² = 3962914225801442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44513501) 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 3 ways as a sum of consecutive naturals, for example, 1171391 + ... + 1171428.

It is an arithmetic number, because the mean of its divisors is an integer number (11714100).

Almost surely, 2^44513561 is an apocalyptic number.

It is an amenable number.

44513561 is a deficient number, since it is larger than the sum of its proper divisors (2342839).

44513561 is a wasteful number, since it uses less digits than its factorization.

44513561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342838.

The product of its digits is 7200, while the sum is 29.

The square root of 44513561 is about 6671.8483945605. The cubic root of 44513561 is about 354.4030462101.

The spelling of 44513561 in words is "forty-four million, five hundred thirteen thousand, five hundred sixty-one".