40513245 has 16 divisors (see below), whose sum is σ = 65551680. Its totient is φ = 21363584.

The previous prime is 40513241. The next prime is 40513273. The reversal of 40513245 is 54231504.

It is a cyclic number.

It is not a de Polignac number, because 40513245 - 2² = 40513241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513241) 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, 13839 + ... + 16508.

It is an arithmetic number, because the mean of its divisors is an integer number (4096980).

Almost surely, 2^40513245 is an apocalyptic number.

It is an amenable number.

40513245 is a deficient number, since it is larger than the sum of its proper divisors (25038435).

40513245 is a wasteful number, since it uses less digits than its factorization.

40513245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30444.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40513245 is about 6365.0015710917. The cubic root of 40513245 is about 343.4517050811.

Adding to 40513245 its reverse (54231504), we get a palindrome (94744749).

The spelling of 40513245 in words is "forty million, five hundred thirteen thousand, two hundred forty-five".