40022513 has 4 divisors (see below), whose sum is σ = 40112100. Its totient is φ = 39932928.

The previous prime is 40022509. The next prime is 40022537. The reversal of 40022513 is 31522004.

40022513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31888609 + 8133904 = 5647^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 40022513 - 2² = 40022509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40022491 and 40022500.

It is not an unprimeable number, because it can be changed into a prime (40022503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44120 + ... + 45017.

It is an arithmetic number, because the mean of its divisors is an integer number (10028025).

Almost surely, 2^40022513 is an apocalyptic number.

It is an amenable number.

40022513 is a deficient number, since it is larger than the sum of its proper divisors (89587).

40022513 is an equidigital number, since it uses as much as digits as its factorization.

40022513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89586.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40022513 is about 6326.3348789011. The cubic root of 40022513 is about 342.0593384494.

Adding to 40022513 its reverse (31522004), we get a palindrome (71544517).

The spelling of 40022513 in words is "forty million, twenty-two thousand, five hundred thirteen".