55276219 has 4 divisors (see below), whose sum is σ = 55303960. Its totient is φ = 55248480.

The previous prime is 55276217. The next prime is 55276223. The reversal of 55276219 is 91267255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55276219 - 2¹ = 55276217 is a prime.

It is a super-2 number, since 2×55276219² = 6110920773871922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55276213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10629 + ... + 14950.

It is an arithmetic number, because the mean of its divisors is an integer number (13825990).

Almost surely, 2^55276219 is an apocalyptic number.

55276219 is a deficient number, since it is larger than the sum of its proper divisors (27741).

55276219 is a wasteful number, since it uses less digits than its factorization.

55276219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27740.

The product of its digits is 37800, while the sum is 37.

The square root of 55276219 is about 7434.7978452679. The cubic root of 55276219 is about 380.9308182634.

The spelling of 55276219 in words is "fifty-five million, two hundred seventy-six thousand, two hundred nineteen".