61382271 has 4 divisors (see below), whose sum is σ = 81843032. Its totient is φ = 40921512.

The previous prime is 61382267. The next prime is 61382281. The reversal of 61382271 is 17228316.

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

It is not a de Polignac number, because 61382271 - 2² = 61382267 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 (61382281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230376 + ... + 10230381.

It is an arithmetic number, because the mean of its divisors is an integer number (20460758).

Almost surely, 2^61382271 is an apocalyptic number.

61382271 is a deficient number, since it is larger than the sum of its proper divisors (20460761).

61382271 is a wasteful number, since it uses less digits than its factorization.

61382271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460760.

The product of its digits is 4032, while the sum is 30.

The square root of 61382271 is about 7834.6838481205. The cubic root of 61382271 is about 394.4703063972.

The spelling of 61382271 in words is "sixty-one million, three hundred eighty-two thousand, two hundred seventy-one".