61361571 has 8 divisors (see below), whose sum is σ = 81889984. Its totient is φ = 40870440.

The previous prime is 61361569. The next prime is 61361609. The reversal of 61361571 is 17516316.

61361571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61361571 - 2¹ = 61361569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61361501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5221 + ... + 12246.

It is an arithmetic number, because the mean of its divisors is an integer number (10236248).

Almost surely, 2^61361571 is an apocalyptic number.

61361571 is a deficient number, since it is larger than the sum of its proper divisors (20528413).

61361571 is a wasteful number, since it uses less digits than its factorization.

61361571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18641.

The product of its digits is 3780, while the sum is 30.

The square root of 61361571 is about 7833.3626878883. The cubic root of 61361571 is about 394.4259588830.

Adding to 61361571 its reverse (17516316), we get a palindrome (78877887).

The spelling of 61361571 in words is "sixty-one million, three hundred sixty-one thousand, five hundred seventy-one".