56971 has 4 divisors (see below), whose sum is σ = 59472. Its totient is φ = 54472.

The previous prime is 56963. The next prime is 56983. The reversal of 56971 is 17965.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17965 = 5 ⋅3593.

It is a cyclic number.

It is not a de Polignac number, because 56971 - 2³ = 56963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56911) 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, 1216 + ... + 1261.

It is an arithmetic number, because the mean of its divisors is an integer number (14868).

2⁵⁶⁹⁷¹ is an apocalyptic number.

56971 is a deficient number, since it is larger than the sum of its proper divisors (2501).

56971 is a wasteful number, since it uses less digits than its factorization.

56971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its digits is 1890, while the sum is 28.

The square root of 56971 is about 238.6859861827. The cubic root of 56971 is about 38.4784835078.

The spelling of 56971 in words is "fifty-six thousand, nine hundred seventy-one".