40855161 has 16 divisors (see below), whose sum is σ = 55190016. Its totient is φ = 26881536.

The previous prime is 40855159. The next prime is 40855163. The reversal of 40855161 is 16155804.

It is an interprime number because it is at equal distance from previous prime (40855159) and next prime (40855163).

It is not a de Polignac number, because 40855161 - 2¹ = 40855159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40855163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115561 + ... + 115913.

It is an arithmetic number, because the mean of its divisors is an integer number (3449376).

Almost surely, 2^40855161 is an apocalyptic number.

It is an amenable number.

40855161 is a deficient number, since it is larger than the sum of its proper divisors (14334855).

40855161 is a wasteful number, since it uses less digits than its factorization.

40855161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 40855161 is about 6391.8042053868. The cubic root of 40855161 is about 344.4151991549.

The spelling of 40855161 in words is "forty million, eight hundred fifty-five thousand, one hundred sixty-one".