40512513 has 8 divisors (see below), whose sum is σ = 57194208. Its totient is φ = 25419584.

The previous prime is 40512497. The next prime is 40512517. The reversal of 40512513 is 31521504.

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 40512513 - 2⁴ = 40512497 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40512513.

It is not an unprimeable number, because it can be changed into a prime (40512517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397131 + ... + 397232.

It is an arithmetic number, because the mean of its divisors is an integer number (7149276).

Almost surely, 2^40512513 is an apocalyptic number.

It is an amenable number.

40512513 is a deficient number, since it is larger than the sum of its proper divisors (16681695).

40512513 is a wasteful number, since it uses less digits than its factorization.

40512513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794383.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40512513 is about 6364.9440688823. The cubic root of 40512513 is about 343.4496365546.

It can be divided in two parts, 405125 and 13, that multiplied together give a palindrome (5266625).

The spelling of 40512513 in words is "forty million, five hundred twelve thousand, five hundred thirteen".