52220111 has 4 divisors (see below), whose sum is σ = 52234824. Its totient is φ = 52205400.

The previous prime is 52220099. The next prime is 52220123. The reversal of 52220111 is 11102225.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (52220099) and next prime (52220123).

It is a cyclic number.

It is not a de Polignac number, because 52220111 - 2¹⁴ = 52203727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52220171) 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, 1616 + ... + 10346.

It is an arithmetic number, because the mean of its divisors is an integer number (13058706).

Almost surely, 2^52220111 is an apocalyptic number.

52220111 is a deficient number, since it is larger than the sum of its proper divisors (14713).

52220111 is an equidigital number, since it uses as much as digits as its factorization.

52220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14712.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 52220111 is about 7226.3483862875. The cubic root of 52220111 is about 373.7770197056. Note that the first 3 decimals are identical.

Adding to 52220111 its reverse (11102225), we get a palindrome (63322336).

The spelling of 52220111 in words is "fifty-two million, two hundred twenty thousand, one hundred eleven".