3158561 has 8 divisors (see below), whose sum is σ = 3620544. Its totient is φ = 2699280.

The previous prime is 3158557. The next prime is 3158569. The reversal of 3158561 is 1658513.

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

It is a cyclic number.

It is not a de Polignac number, because 3158561 - 2² = 3158557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3158569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226 + ... + 4916.

It is an arithmetic number, because the mean of its divisors is an integer number (452568).

Almost surely, 2^3158561 is an apocalyptic number.

It is an amenable number.

3158561 is a deficient number, since it is larger than the sum of its proper divisors (461983).

3158561 is an equidigital number, since it uses as much as digits as its factorization.

3158561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its digits is 3600, while the sum is 29.

The square root of 3158561 is about 1777.2340870015. The cubic root of 3158561 is about 146.7224001913.

The spelling of 3158561 in words is "three million, one hundred fifty-eight thousand, five hundred sixty-one".