44540381 has 2 divisors, whose sum is σ = 44540382. Its totient is φ = 44540380.

The previous prime is 44540369. The next prime is 44540387. The reversal of 44540381 is 18304544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43112356 + 1428025 = 6566^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 44540381 - 2²² = 40346077 is a prime.

It is a super-2 number, since 2×44540381² = 3967691079250322, 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 (44540387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22270190 + 22270191.

It is an arithmetic number, because the mean of its divisors is an integer number (22270191).

Almost surely, 2^44540381 is an apocalyptic number.

It is an amenable number.

44540381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44540381 is an equidigital number, since it uses as much as digits as its factorization.

44540381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 44540381 is about 6673.8580296557. The cubic root of 44540381 is about 354.4742094028.

The spelling of 44540381 in words is "forty-four million, five hundred forty thousand, three hundred eighty-one".