44140561 has 2 divisors, whose sum is σ = 44140562. Its totient is φ = 44140560.

The previous prime is 44140549. The next prime is 44140571. The reversal of 44140561 is 16504144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 5202961 = 6240^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 44140561 - 2⁹ = 44140049 is a prime.

It is not a weakly prime, because it can be changed into another prime (44140511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22070280 + 22070281.

It is an arithmetic number, because the mean of its divisors is an integer number (22070281).

Almost surely, 2^44140561 is an apocalyptic number.

It is an amenable number.

44140561 is a deficient number, since it is larger than the sum of its proper divisors (1).

44140561 is an equidigital number, since it uses as much as digits as its factorization.

44140561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 44140561 is about 6643.8363164666. The cubic root of 44140561 is about 353.4103652109.

The spelling of 44140561 in words is "forty-four million, one hundred forty thousand, five hundred sixty-one".