61090871 has 4 divisors (see below), whose sum is σ = 64306200. Its totient is φ = 57875544.

The previous prime is 61090867. The next prime is 61090873. The reversal of 61090871 is 17809016.

61090871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61090871 - 2² = 61090867 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 (61090873) 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 3 ways as a sum of consecutive naturals, for example, 1607636 + ... + 1607673.

It is an arithmetic number, because the mean of its divisors is an integer number (16076550).

Almost surely, 2^61090871 is an apocalyptic number.

61090871 is a deficient number, since it is larger than the sum of its proper divisors (3215329).

61090871 is a wasteful number, since it uses less digits than its factorization.

61090871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215328.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 61090871 is about 7816.0649306412. The cubic root of 61090871 is about 393.8450931491.

Adding to 61090871 its reverse (17809016), we get a palindrome (78899887).

The spelling of 61090871 in words is "sixty-one million, ninety thousand, eight hundred seventy-one".