61103271 has 4 divisors (see below), whose sum is σ = 81471032. Its totient is φ = 40735512.

The previous prime is 61103267. The next prime is 61103299. The reversal of 61103271 is 17230116.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61103271 - 2² = 61103267 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 (61103071) 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, 10183876 + ... + 10183881.

It is an arithmetic number, because the mean of its divisors is an integer number (20367758).

Almost surely, 2^61103271 is an apocalyptic number.

61103271 is a deficient number, since it is larger than the sum of its proper divisors (20367761).

61103271 is a wasteful number, since it uses less digits than its factorization.

61103271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20367760.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 61103271 is about 7816.8581284299. The cubic root of 61103271 is about 393.8717384219.

Adding to 61103271 its reverse (17230116), we get a palindrome (78333387).

The spelling of 61103271 in words is "sixty-one million, one hundred three thousand, two hundred seventy-one".