13540022 has 4 divisors (see below), whose sum is σ = 20310036. Its totient is φ = 6770010.

The previous prime is 13540001. The next prime is 13540073. The reversal of 13540022 is 22004531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22004531 = 677 ⋅32503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385004 + ... + 3385007.

It is an arithmetic number, because the mean of its divisors is an integer number (5077509).

Almost surely, 2^13540022 is an apocalyptic number.

13540022 is a deficient number, since it is larger than the sum of its proper divisors (6770014).

13540022 is an equidigital number, since it uses as much as digits as its factorization.

13540022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770013.

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

The square root of 13540022 is about 3679.6768879889. The cubic root of 13540022 is about 238.3452255247.

Adding to 13540022 its reverse (22004531), we get a palindrome (35544553).

The spelling of 13540022 in words is "thirteen million, five hundred forty thousand, twenty-two".