40520159 has 2 divisors, whose sum is σ = 40520160. Its totient is φ = 40520158.

The previous prime is 40520153. The next prime is 40520167. The reversal of 40520159 is 95102504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40520159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40520153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20260079 + 20260080.

It is an arithmetic number, because the mean of its divisors is an integer number (20260080).

Almost surely, 2^40520159 is an apocalyptic number.

40520159 is a deficient number, since it is larger than the sum of its proper divisors (1).

40520159 is an equidigital number, since it uses as much as digits as its factorization.

40520159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 40520159 is about 6365.5446742600. The cubic root of 40520159 is about 343.4712418196.

The spelling of 40520159 in words is "forty million, five hundred twenty thousand, one hundred fifty-nine".