44425821 has 16 divisors (see below), whose sum is σ = 66705408. Its totient is φ = 26055600.

The previous prime is 44425817. The next prime is 44425847. The reversal of 44425821 is 12852444.

It is not a de Polignac number, because 44425821 - 2² = 44425817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44425421) 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, 20691 + ... + 22736.

It is an arithmetic number, because the mean of its divisors is an integer number (4169088).

Almost surely, 2^44425821 is an apocalyptic number.

It is an amenable number.

44425821 is a deficient number, since it is larger than the sum of its proper divisors (22279587).

44425821 is a wasteful number, since it uses less digits than its factorization.

44425821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43472.

The product of its digits is 10240, while the sum is 30.

The square root of 44425821 is about 6665.2697619826. The cubic root of 44425821 is about 354.1700402416.

The spelling of 44425821 in words is "forty-four million, four hundred twenty-five thousand, eight hundred twenty-one".