55082819 has 4 divisors (see below), whose sum is σ = 60090360. Its totient is φ = 50075280.

The previous prime is 55082809. The next prime is 55082849. The reversal of 55082819 is 91828055.

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 55082819 - 2¹⁶ = 55017283 is a prime.

It is a super-2 number, since 2×55082819² = 6068233897973522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55082809) 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, 2503754 + ... + 2503775.

It is an arithmetic number, because the mean of its divisors is an integer number (15022590).

Almost surely, 2^55082819 is an apocalyptic number.

55082819 is a deficient number, since it is larger than the sum of its proper divisors (5007541).

55082819 is a wasteful number, since it uses less digits than its factorization.

55082819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007540.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 55082819 is about 7421.7800425504. The cubic root of 55082819 is about 380.4860332063.

The spelling of 55082819 in words is "fifty-five million, eighty-two thousand, eight hundred nineteen".