40544261 has 2 divisors, whose sum is σ = 40544262. Its totient is φ = 40544260.

The previous prime is 40544219. The next prime is 40544263. The reversal of 40544261 is 16244504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 15484225 = 5006^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 40544261 - 2⁶ = 40544197 is a prime.

It is a super-2 number, since 2×40544261² = 3287674200072242, which contains 22 as substring.

Together with 40544263, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40544261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40544263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272130 + 20272131.

It is an arithmetic number, because the mean of its divisors is an integer number (20272131).

Almost surely, 2^40544261 is an apocalyptic number.

It is an amenable number.

40544261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544261 is an equidigital number, since it uses as much as digits as its factorization.

40544261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40544261 is about 6367.4375536789. The cubic root of 40544261 is about 343.5393289418.

Adding to 40544261 its reverse (16244504), we get a palindrome (56788765).

The spelling of 40544261 in words is "forty million, five hundred forty-four thousand, two hundred sixty-one".