55547171 has 4 divisors (see below), whose sum is σ = 55724952. Its totient is φ = 55369392.

The previous prime is 55547159. The next prime is 55547197. The reversal of 55547171 is 17174555.

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 55547171 - 2¹⁰ = 55546147 is a prime.

It is a super-2 number, since 2×55547171² = 6170976412206482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55547111) 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, 88421 + ... + 89046.

It is an arithmetic number, because the mean of its divisors is an integer number (13931238).

Almost surely, 2^55547171 is an apocalyptic number.

55547171 is a deficient number, since it is larger than the sum of its proper divisors (177781).

55547171 is a wasteful number, since it uses less digits than its factorization.

55547171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177780.

The product of its digits is 24500, while the sum is 35.

The square root of 55547171 is about 7452.9974506906. The cubic root of 55547171 is about 381.5522173783.

The spelling of 55547171 in words is "fifty-five million, five hundred forty-seven thousand, one hundred seventy-one".