61017271 has 4 divisors (see below), whose sum is σ = 69734032. Its totient is φ = 52300512.

The previous prime is 61017259. The next prime is 61017289. The reversal of 61017271 is 17271016.

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 61017271 - 2⁵ = 61017239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61017211) 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, 4358370 + ... + 4358383.

It is an arithmetic number, because the mean of its divisors is an integer number (17433508).

Almost surely, 2^61017271 is an apocalyptic number.

61017271 is a deficient number, since it is larger than the sum of its proper divisors (8716761).

61017271 is an equidigital number, since it uses as much as digits as its factorization.

61017271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716760.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 61017271 is about 7811.3552601325. The cubic root of 61017271 is about 393.6868663033.

Adding to 61017271 its reverse (17271016), we get a palindrome (78288287).

The spelling of 61017271 in words is "sixty-one million, seventeen thousand, two hundred seventy-one".