40611559 has 2 divisors, whose sum is σ = 40611560. Its totient is φ = 40611558.

The previous prime is 40611553. The next prime is 40611587. The reversal of 40611559 is 95511604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40611559 - 2³ = 40611551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40611559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40611551) 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, 20305779 + 20305780.

It is an arithmetic number, because the mean of its divisors is an integer number (20305780).

Almost surely, 2^40611559 is an apocalyptic number.

40611559 is a deficient number, since it is larger than the sum of its proper divisors (1).

40611559 is an equidigital number, since it uses as much as digits as its factorization.

40611559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 40611559 is about 6372.7199059742. The cubic root of 40611559 is about 343.7293001750.

The spelling of 40611559 in words is "forty million, six hundred eleven thousand, five hundred fifty-nine".