55271181 has 32 divisors (see below), whose sum is σ = 86361088. Its totient is φ = 30792960.

The previous prime is 55271179. The next prime is 55271189. The reversal of 55271181 is 18117255.

It is not a de Polignac number, because 55271181 - 2¹ = 55271179 is a prime.

It is a super-2 number, since 2×55271181² = 6109806898269522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55271189) 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, 229221 + ... + 229461.

It is an arithmetic number, because the mean of its divisors is an integer number (2698784).

Almost surely, 2^55271181 is an apocalyptic number.

It is an amenable number.

55271181 is a deficient number, since it is larger than the sum of its proper divisors (31089907).

55271181 is a wasteful number, since it uses less digits than its factorization.

55271181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its digits is 2800, while the sum is 30.

The square root of 55271181 is about 7434.4590253764. The cubic root of 55271181 is about 380.9192449455.

The spelling of 55271181 in words is "fifty-five million, two hundred seventy-one thousand, one hundred eighty-one".