55111602 has 32 divisors (see below), whose sum is σ = 135660672. Its totient is φ = 14534784.

The previous prime is 55111601. The next prime is 55111613. The reversal of 55111602 is 20611155.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (55111601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49923 + ... + 51014.

It is an arithmetic number, because the mean of its divisors is an integer number (4239396).

Almost surely, 2^55111602 is an apocalyptic number.

55111602 is an abundant number, since it is smaller than the sum of its proper divisors (80549070).

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

55111602 is a wasteful number, since it uses less digits than its factorization.

55111602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100962.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 55111602 is about 7423.7188793758. The cubic root of 55111602 is about 380.5522947781.

Adding to 55111602 its reverse (20611155), we get a palindrome (75722757).

The spelling of 55111602 in words is "fifty-five million, one hundred eleven thousand, six hundred two".