61616159 has 4 divisors (see below), whose sum is σ = 67217640. Its totient is φ = 56014680.

The previous prime is 61616141. The next prime is 61616167. The reversal of 61616159 is 95161616.

61616159 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 61616159 - 2¹⁶ = 61550623 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 (61616759) 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, 2800724 + ... + 2800745.

It is an arithmetic number, because the mean of its divisors is an integer number (16804410).

Almost surely, 2^61616159 is an apocalyptic number.

61616159 is a deficient number, since it is larger than the sum of its proper divisors (5601481).

61616159 is a wasteful number, since it uses less digits than its factorization.

61616159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601480.

The product of its digits is 9720, while the sum is 35.

The square root of 61616159 is about 7849.5961042591. The cubic root of 61616159 is about 394.9706948296.

The spelling of 61616159 in words is "sixty-one million, six hundred sixteen thousand, one hundred fifty-nine".