40516013 has 4 divisors (see below), whose sum is σ = 40539228. Its totient is φ = 40492800.

The previous prime is 40516001. The next prime is 40516033. The reversal of 40516013 is 31061504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6620329 + 33895684 = 2573^2 + 5822^2 .

It is a cyclic number.

It is not a de Polignac number, because 40516013 - 2²² = 36321709 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 (40516033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8756 + ... + 12557.

It is an arithmetic number, because the mean of its divisors is an integer number (10134807).

Almost surely, 2^40516013 is an apocalyptic number.

It is an amenable number.

40516013 is a deficient number, since it is larger than the sum of its proper divisors (23215).

40516013 is a wasteful number, since it uses less digits than its factorization.

40516013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23214.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40516013 is about 6365.2190064443. The cubic root of 40516013 is about 343.4595268249.

Adding to 40516013 its reverse (31061504), we get a palindrome (71577517).

The spelling of 40516013 in words is "forty million, five hundred sixteen thousand, thirteen".