44551921 has 8 divisors (see below), whose sum is σ = 45144000. Its totient is φ = 43963920.

The previous prime is 44551919. The next prime is 44551931. The reversal of 44551921 is 12915544.

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 44551921 - 2¹ = 44551919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44551931) 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, 25215 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (5643000).

Almost surely, 2^44551921 is an apocalyptic number.

It is an amenable number.

44551921 is a deficient number, since it is larger than the sum of its proper divisors (592079).

44551921 is a wasteful number, since it uses less digits than its factorization.

44551921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its digits is 7200, while the sum is 31.

The square root of 44551921 is about 6674.7225410499. The cubic root of 44551921 is about 354.5048204203.

The spelling of 44551921 in words is "forty-four million, five hundred fifty-one thousand, nine hundred twenty-one".