55205271 has 24 divisors (see below), whose sum is σ = 87295104. Its totient is φ = 33340560.

The previous prime is 55205261. The next prime is 55205281. The reversal of 55205271 is 17250255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55205261) and next prime (55205281).

It is not a de Polignac number, because 55205271 - 2⁶ = 55205207 is a prime.

It is a super-3 number, since 3×55205271³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33550 + ... + 35156.

It is an arithmetic number, because the mean of its divisors is an integer number (3637296).

Almost surely, 2^55205271 is an apocalyptic number.

55205271 is a deficient number, since it is larger than the sum of its proper divisors (32089833).

55205271 is a wasteful number, since it uses less digits than its factorization.

55205271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55205271 is about 7430.0249663107. The cubic root of 55205271 is about 380.7677713490.

The spelling of 55205271 in words is "fifty-five million, two hundred five thousand, two hundred seventy-one".