158560961 has 4 divisors (see below), whose sum is σ = 170757972. Its totient is φ = 146363952.

The previous prime is 158560957. The next prime is 158560993. The reversal of 158560961 is 169065851.

158560961 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 can be written as a sum of positive squares in 2 ways, for example, as 17901361 + 140659600 = 4231^2 + 11860^2 .

It is a cyclic number.

It is not a de Polignac number, because 158560961 - 2² = 158560957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158560931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6098486 + ... + 6098511.

It is an arithmetic number, because the mean of its divisors is an integer number (42689493).

Almost surely, 2^158560961 is an apocalyptic number.

It is an amenable number.

158560961 is a deficient number, since it is larger than the sum of its proper divisors (12197011).

158560961 is a wasteful number, since it uses less digits than its factorization.

158560961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197010.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 158560961 is about 12592.0991498638. The cubic root of 158560961 is about 541.2510556865.

The spelling of 158560961 in words is "one hundred fifty-eight million, five hundred sixty thousand, nine hundred sixty-one".