44212521 has 8 divisors (see below), whose sum is σ = 60543424. Its totient is φ = 28678320.

The previous prime is 44212517. The next prime is 44212537. The reversal of 44212521 is 12521244.

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

It is not a de Polignac number, because 44212521 - 2² = 44212517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44212561) 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, 199045 + ... + 199266.

It is an arithmetic number, because the mean of its divisors is an integer number (7567928).

Almost surely, 2^44212521 is an apocalyptic number.

It is an amenable number.

44212521 is a deficient number, since it is larger than the sum of its proper divisors (16330903).

44212521 is a wasteful number, since it uses less digits than its factorization.

44212521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398351.

The product of its digits is 640, while the sum is 21.

The square root of 44212521 is about 6649.2496569162. The cubic root of 44212521 is about 353.6023096266.

Adding to 44212521 its reverse (12521244), we get a palindrome (56733765).

The spelling of 44212521 in words is "forty-four million, two hundred twelve thousand, five hundred twenty-one".