44561381 has 2 divisors, whose sum is σ = 44561382. Its totient is φ = 44561380.

The previous prime is 44561347. The next prime is 44561389. The reversal of 44561381 is 18316544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 11498881 = 5750^2 + 3391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44561381 is a prime.

It is a super-2 number, since 2×44561381² = 3971433353254322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44561389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22280690 + 22280691.

It is an arithmetic number, because the mean of its divisors is an integer number (22280691).

Almost surely, 2^44561381 is an apocalyptic number.

It is an amenable number.

44561381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44561381 is an equidigital number, since it uses as much as digits as its factorization.

44561381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 44561381 is about 6675.4311471245. The cubic root of 44561381 is about 354.5299100849.

The spelling of 44561381 in words is "forty-four million, five hundred sixty-one thousand, three hundred eighty-one".