40513165 has 16 divisors (see below), whose sum is σ = 60612480. Its totient is φ = 25254720.

The previous prime is 40513163. The next prime is 40513169. The reversal of 40513165 is 56131504.

40513165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40513165 - 2¹ = 40513163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52230 + ... + 52999.

It is an arithmetic number, because the mean of its divisors is an integer number (3788280).

Almost surely, 2^40513165 is an apocalyptic number.

It is an amenable number.

40513165 is a deficient number, since it is larger than the sum of its proper divisors (20099315).

40513165 is a wasteful number, since it uses less digits than its factorization.

40513165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105252.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 40513165 is about 6364.9952867225. The cubic root of 40513165 is about 343.4514790139.

Adding to 40513165 its reverse (56131504), we get a palindrome (96644669).

The spelling of 40513165 in words is "forty million, five hundred thirteen thousand, one hundred sixty-five".