44001563 has 4 divisors (see below), whose sum is σ = 44348160. Its totient is φ = 43654968.

The previous prime is 44001533. The next prime is 44001619. The reversal of 44001563 is 36510044.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 44001563 - 2¹² = 43997467 is a prime.

It is a super-2 number, since 2×44001563² = 3872275092885938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44001533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173108 + ... + 173361.

It is an arithmetic number, because the mean of its divisors is an integer number (11087040).

Almost surely, 2^44001563 is an apocalyptic number.

44001563 is a deficient number, since it is larger than the sum of its proper divisors (346597).

44001563 is a wasteful number, since it uses less digits than its factorization.

44001563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346596.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 44001563 is about 6633.3673952224. The cubic root of 44001563 is about 353.0390137365.

The spelling of 44001563 in words is "forty-four million, one thousand, five hundred sixty-three".