44521805 has 8 divisors (see below), whose sum is σ = 54027000. Its totient is φ = 35216896.

The previous prime is 44521801. The next prime is 44521879. The reversal of 44521805 is 50812544.

It can be written as a sum of positive squares in 4 ways, for example, as 1737124 + 42784681 = 1318^2 + 6541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44521805 - 2² = 44521801 is a prime.

It is a super-2 number, since 2×44521805² = 3964382240916050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44521801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49580 + ... + 50469.

It is an arithmetic number, because the mean of its divisors is an integer number (6753375).

Almost surely, 2^44521805 is an apocalyptic number.

It is an amenable number.

44521805 is a deficient number, since it is larger than the sum of its proper divisors (9505195).

44521805 is a wasteful number, since it uses less digits than its factorization.

44521805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100143.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 44521805 is about 6672.4661857517. The cubic root of 44521805 is about 354.4249235759.

It can be divided in two parts, 445 and 21805, that multiplied together give a square (9703225 = 3115²).

The spelling of 44521805 in words is "forty-four million, five hundred twenty-one thousand, eight hundred five".