11220539 has 4 divisors (see below), whose sum is σ = 12240600. Its totient is φ = 10200480.

The previous prime is 11220533. The next prime is 11220541. The reversal of 11220539 is 93502211.

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 11220539 - 2⁸ = 11220283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510014 + ... + 510035.

It is an arithmetic number, because the mean of its divisors is an integer number (3060150).

Almost surely, 2^11220539 is an apocalyptic number.

11220539 is a deficient number, since it is larger than the sum of its proper divisors (1020061).

11220539 is a wasteful number, since it uses less digits than its factorization.

11220539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020060.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 11220539 is about 3349.7073006458. The cubic root of 11220539 is about 223.8744712809.

The spelling of 11220539 in words is "eleven million, two hundred twenty thousand, five hundred thirty-nine".