22140515 has 4 divisors (see below), whose sum is σ = 26568624. Its totient is φ = 17712408.

The previous prime is 22140509. The next prime is 22140523. The reversal of 22140515 is 51504122.

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

It is a cyclic number.

It is not a de Polignac number, because 22140515 - 2¹⁴ = 22124131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 2214047 + ... + 2214056.

It is an arithmetic number, because the mean of its divisors is an integer number (6642156).

Almost surely, 2^22140515 is an apocalyptic number.

22140515 is a deficient number, since it is larger than the sum of its proper divisors (4428109).

22140515 is an equidigital number, since it uses as much as digits as its factorization.

22140515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428108.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 22140515 is about 4705.3708674237. The cubic root of 22140515 is about 280.7992258902.

Adding to 22140515 its reverse (51504122), we get a palindrome (73644637).

The spelling of 22140515 in words is "twenty-two million, one hundred forty thousand, five hundred fifteen".