55311102 has 72 divisors (see below), whose sum is σ = 152106552. Its totient is φ = 14364000.

The previous prime is 55311101. The next prime is 55311121. The reversal of 55311102 is 20111355.

55311102 is a `hidden beast` number, since 553 + 1 + 110 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55311101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6852 + ... + 12552.

It is an arithmetic number, because the mean of its divisors is an integer number (2112591).

Almost surely, 2^55311102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55311102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76053276).

55311102 is an abundant number, since it is smaller than the sum of its proper divisors (96795450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55311102 is a wasteful number, since it uses less digits than its factorization.

55311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734 (or 5724 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 55311102 is about 7437.1434032160. The cubic root of 55311102 is about 381.0109323748.

Adding to 55311102 its reverse (20111355), we get a palindrome (75422457).

The spelling of 55311102 in words is "fifty-five million, three hundred eleven thousand, one hundred two".