35971 has 4 divisors (see below), whose sum is σ = 38752. Its totient is φ = 33192.

The previous prime is 35969. The next prime is 35977. The reversal of 35971 is 17953.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17953 = 13 ⋅1381.

It is a cyclic number.

It is not a de Polignac number, because 35971 - 2¹ = 35969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35977) 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, 1371 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (9688).

2³⁵⁹⁷¹ is an apocalyptic number.

35971 is the 110-th hex number.

35971 is a deficient number, since it is larger than the sum of its proper divisors (2781).

35971 is a wasteful number, since it uses less digits than its factorization.

35971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

The product of its digits is 945, while the sum is 25.

The square root of 35971 is about 189.6602225033. The cubic root of 35971 is about 33.0104038210.

The spelling of 35971 in words is "thirty-five thousand, nine hundred seventy-one".