55111022 has 4 divisors (see below), whose sum is σ = 82666536. Its totient is φ = 27555510.

The previous prime is 55111009. The next prime is 55111027. The reversal of 55111022 is 22011155.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13777754 + ... + 13777757.

It is an arithmetic number, because the mean of its divisors is an integer number (20666634).

Almost surely, 2^55111022 is an apocalyptic number.

55111022 is a deficient number, since it is larger than the sum of its proper divisors (27555514).

55111022 is a wasteful number, since it uses less digits than its factorization.

55111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27555513.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 55111022 is about 7423.6798152938. The cubic root of 55111022 is about 380.5509597833.

Adding to 55111022 its reverse (22011155), we get a palindrome (77122177).

The spelling of 55111022 in words is "fifty-five million, one hundred eleven thousand, twenty-two".