40513205 has 8 divisors (see below), whose sum is σ = 48746400. Its totient is φ = 32323536.

The previous prime is 40513177. The next prime is 40513217. The reversal of 40513205 is 50231504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40513205 - 2⁸ = 40512949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8795 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (6093300).

Almost surely, 2^40513205 is an apocalyptic number.

It is an amenable number.

40513205 is a deficient number, since it is larger than the sum of its proper divisors (8233195).

40513205 is a wasteful number, since it uses less digits than its factorization.

40513205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21763.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40513205 is about 6364.9984289079. The cubic root of 40513205 is about 343.4515920475.

Adding to 40513205 its sum of digits (20), we get a square (40513225 = 6365²).

Adding to 40513205 its reverse (50231504), we get a palindrome (90744709).

The spelling of 40513205 in words is "forty million, five hundred thirteen thousand, two hundred five".