55082391 has 16 divisors (see below), whose sum is σ = 90392064. Its totient is φ = 29054304.

The previous prime is 55082389. The next prime is 55082399. The reversal of 55082391 is 19328055.

It is not a de Polignac number, because 55082391 - 2¹ = 55082389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55082399) 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, 100611 + ... + 101156.

It is an arithmetic number, because the mean of its divisors is an integer number (5649504).

Almost surely, 2^55082391 is an apocalyptic number.

55082391 is a deficient number, since it is larger than the sum of its proper divisors (35309673).

55082391 is a wasteful number, since it uses less digits than its factorization.

55082391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201790.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 55082391 is about 7421.7512084413. The cubic root of 55082391 is about 380.4850477299.

The spelling of 55082391 in words is "fifty-five million, eighty-two thousand, three hundred ninety-one".