44745221 has 4 divisors (see below), whose sum is σ = 44872332. Its totient is φ = 44618112.

The previous prime is 44745199. The next prime is 44745251. The reversal of 44745221 is 12254744.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17850625 + 26894596 = 4225^2 + 5186^2 .

It is a cyclic number.

It is not a de Polignac number, because 44745221 - 2¹⁴ = 44728837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44745251) 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, 63026 + ... + 63731.

It is an arithmetic number, because the mean of its divisors is an integer number (11218083).

Almost surely, 2^44745221 is an apocalyptic number.

It is an amenable number.

44745221 is a deficient number, since it is larger than the sum of its proper divisors (127111).

44745221 is a wasteful number, since it uses less digits than its factorization.

44745221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127110.

The product of its digits is 8960, while the sum is 29.

The square root of 44745221 is about 6689.1868713619. The cubic root of 44745221 is about 355.0167842359.

Adding to 44745221 its reverse (12254744), we get a palindrome (56999965).

The spelling of 44745221 in words is "forty-four million, seven hundred forty-five thousand, two hundred twenty-one".