55820271 has 32 divisors (see below), whose sum is σ = 85639680. Its totient is φ = 32054400.

The previous prime is 55820269. The next prime is 55820291. The reversal of 55820271 is 17202855.

It is not a de Polignac number, because 55820271 - 2¹ = 55820269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55820201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52081 + ... + 53141.

It is an arithmetic number, because the mean of its divisors is an integer number (2676240).

Almost surely, 2^55820271 is an apocalyptic number.

55820271 is a deficient number, since it is larger than the sum of its proper divisors (29819409).

55820271 is a wasteful number, since it uses less digits than its factorization.

55820271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55820271 is about 7471.2964738391. The cubic root of 55820271 is about 382.1765012233.

The spelling of 55820271 in words is "fifty-five million, eight hundred twenty thousand, two hundred seventy-one".