61996159 has 2 divisors, whose sum is σ = 61996160. Its totient is φ = 61996158.

The previous prime is 61996157. The next prime is 61996177. The reversal of 61996159 is 95169916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61996159 - 2¹ = 61996157 is a prime.

Together with 61996157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61996157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30998079 + 30998080.

It is an arithmetic number, because the mean of its divisors is an integer number (30998080).

Almost surely, 2^61996159 is an apocalyptic number.

61996159 is a deficient number, since it is larger than the sum of its proper divisors (1).

61996159 is an equidigital number, since it uses as much as digits as its factorization.

61996159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 46.

The square root of 61996159 is about 7873.7639664902. The cubic root of 61996159 is about 395.7809875403.

The spelling of 61996159 in words is "sixty-one million, nine hundred ninety-six thousand, one hundred fifty-nine".