56671171 has 4 divisors (see below), whose sum is σ = 57191200. Its totient is φ = 56151144.

The previous prime is 56671163. The next prime is 56671177. The reversal of 56671171 is 17117665.

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 56671171 - 2³ = 56671163 is a prime.

It is a super-2 number, since 2×56671171² = 6423243245022482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56671177) 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, 259851 + ... + 260068.

It is an arithmetic number, because the mean of its divisors is an integer number (14297800).

Almost surely, 2^56671171 is an apocalyptic number.

56671171 is a deficient number, since it is larger than the sum of its proper divisors (520029).

56671171 is a wasteful number, since it uses less digits than its factorization.

56671171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520028.

The product of its digits is 8820, while the sum is 34.

The square root of 56671171 is about 7528.0257039944. The cubic root of 56671171 is about 384.1086276701.

The spelling of 56671171 in words is "fifty-six million, six hundred seventy-one thousand, one hundred seventy-one".