55198213 has 8 divisors (see below), whose sum is σ = 63174528. Its totient is φ = 47244624.

The previous prime is 55198207. The next prime is 55198261. The reversal of 55198213 is 31289155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55198213 - 2¹³ = 55190021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55198313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (7896816).

Almost surely, 2^55198213 is an apocalyptic number.

It is an amenable number.

55198213 is a deficient number, since it is larger than the sum of its proper divisors (7976315).

55198213 is a wasteful number, since it uses less digits than its factorization.

55198213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363.

The product of its digits is 10800, while the sum is 34.

The square root of 55198213 is about 7429.5499863720. The cubic root of 55198213 is about 380.7515435902.

The spelling of 55198213 in words is "fifty-five million, one hundred ninety-eight thousand, two hundred thirteen".