55347219 has 10 divisors (see below), whose sum is σ = 82679300. Its totient is φ = 36898092.

The previous prime is 55347217. The next prime is 55347233. The reversal of 55347219 is 91274355.

It is not a de Polignac number, because 55347219 - 2¹ = 55347217 is a prime.

It is a super-2 number, since 2×55347219² = 6126629302067922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55347217) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 341569 + ... + 341730.

It is an arithmetic number, because the mean of its divisors is an integer number (8267930).

Almost surely, 2^55347219 is an apocalyptic number.

55347219 is a deficient number, since it is larger than the sum of its proper divisors (27332081).

55347219 is an equidigital number, since it uses as much as digits as its factorization.

55347219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683311 (or 683302 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 55347219 is about 7439.5711569955. The cubic root of 55347219 is about 381.0938450706.

The spelling of 55347219 in words is "fifty-five million, three hundred forty-seven thousand, two hundred nineteen".