158052561 has 4 divisors (see below), whose sum is σ = 210736752. Its totient is φ = 105368372.

The previous prime is 158052551. The next prime is 158052569. The reversal of 158052561 is 165250851.

158052561 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158052561 - 2⁵ = 158052529 is a prime.

It is a super-2 number, since 2×158052561² = 49961224077317442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158052569) 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, 26342091 + ... + 26342096.

It is an arithmetic number, because the mean of its divisors is an integer number (52684188).

Almost surely, 2^158052561 is an apocalyptic number.

It is an amenable number.

158052561 is a deficient number, since it is larger than the sum of its proper divisors (52684191).

158052561 is an equidigital number, since it uses as much as digits as its factorization.

158052561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52684190.

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 158052561 is about 12571.8956804453. The cubic root of 158052561 is about 540.6719584146.

The spelling of 158052561 in words is "one hundred fifty-eight million, fifty-two thousand, five hundred sixty-one".