40061559 has 8 divisors (see below), whose sum is σ = 53502592. Its totient is φ = 26664120.

The previous prime is 40061543. The next prime is 40061563. The reversal of 40061559 is 95516004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40061559 - 2⁴ = 40061543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8689 + ... + 12474.

It is an arithmetic number, because the mean of its divisors is an integer number (6687824).

Almost surely, 2^40061559 is an apocalyptic number.

40061559 is a deficient number, since it is larger than the sum of its proper divisors (13441033).

40061559 is a wasteful number, since it uses less digits than its factorization.

40061559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21797.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 40061559 is about 6329.4201156188. The cubic root of 40061559 is about 342.1705400948.

It can be divided in two parts, 4006 and 1559, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 40061559 in words is "forty million, sixty-one thousand, five hundred fifty-nine".