40513065 has 16 divisors (see below), whose sum is σ = 65237568. Its totient is φ = 21468096.

The previous prime is 40513061. The next prime is 40513133. The reversal of 40513065 is 56031504.

It is not a de Polignac number, because 40513065 - 2² = 40513061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40513061) 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, 6247 + ... + 10956.

It is an arithmetic number, because the mean of its divisors is an integer number (4077348).

Almost surely, 2^40513065 is an apocalyptic number.

It is an amenable number.

40513065 is a deficient number, since it is larger than the sum of its proper divisors (24724503).

40513065 is a wasteful number, since it uses less digits than its factorization.

40513065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17368.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 40513065 is about 6364.9874312523. The cubic root of 40513065 is about 343.4511964294.

Adding to 40513065 its reverse (56031504), we get a palindrome (96544569).

The spelling of 40513065 in words is "forty million, five hundred thirteen thousand, sixty-five".