55100213 has 16 divisors (see below), whose sum is σ = 66873600. Its totient is φ = 44318976.

The previous prime is 55100191. The next prime is 55100219. The reversal of 55100213 is 31200155.

It is a cyclic number.

It is not a de Polignac number, because 55100213 - 2¹⁰ = 55099189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55100191 and 55100200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55100219) 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, 70895 + ... + 71667.

It is an arithmetic number, because the mean of its divisors is an integer number (4179600).

Almost surely, 2^55100213 is an apocalyptic number.

It is an amenable number.

55100213 is a deficient number, since it is larger than the sum of its proper divisors (11773387).

55100213 is a wasteful number, since it uses less digits than its factorization.

55100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55100213 is about 7422.9517713643. The cubic root of 55100213 is about 380.5260788301.

Adding to 55100213 its reverse (31200155), we get a palindrome (86300368).

The spelling of 55100213 in words is "fifty-five million, one hundred thousand, two hundred thirteen".