44361221 has 4 divisors (see below), whose sum is σ = 45443244. Its totient is φ = 43279200.

The previous prime is 44361209. The next prime is 44361223. The reversal of 44361221 is 12216344.

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 616225 + 43744996 = 785^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 44361221 - 2¹⁴ = 44344837 is a prime.

It is a super-2 number, since 2×44361221² = 3935835857221682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44361223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540950 + ... + 541031.

It is an arithmetic number, because the mean of its divisors is an integer number (11360811).

Almost surely, 2^44361221 is an apocalyptic number.

44361221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

44361221 is a deficient number, since it is larger than the sum of its proper divisors (1082023).

44361221 is a wasteful number, since it uses less digits than its factorization.

44361221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082022.

The product of its digits is 1152, while the sum is 23.

The square root of 44361221 is about 6660.4219836284. The cubic root of 44361221 is about 353.9982896488.

Adding to 44361221 its reverse (12216344), we get a palindrome (56577565).

The spelling of 44361221 in words is "forty-four million, three hundred sixty-one thousand, two hundred twenty-one".