55106219 has 16 divisors (see below), whose sum is σ = 64152000. Its totient is φ = 46362624.

The previous prime is 55106201. The next prime is 55106243. The reversal of 55106219 is 91260155.

It is not a de Polignac number, because 55106219 - 2²⁰ = 54057643 is a prime.

It is a super-2 number, since 2×55106219² = 6073390744951922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55106191 and 55106200.

It is not an unprimeable number, because it can be changed into a prime (55106269) 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, 122507 + ... + 122955.

It is an arithmetic number, because the mean of its divisors is an integer number (4009500).

Almost surely, 2^55106219 is an apocalyptic number.

55106219 is a deficient number, since it is larger than the sum of its proper divisors (9045781).

55106219 is a wasteful number, since it uses less digits than its factorization.

55106219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 55106219 is about 7423.3563163841. The cubic root of 55106219 is about 380.5399042854.

The spelling of 55106219 in words is "fifty-five million, one hundred six thousand, two hundred nineteen".