101559561 has 8 divisors (see below), whose sum is σ = 139072704. Its totient is φ = 65876400.

The previous prime is 101559553. The next prime is 101559587. The reversal of 101559561 is 165955101.

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

It is not a de Polignac number, because 101559561 - 2³ = 101559553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101559761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457365 + ... + 457586.

It is an arithmetic number, because the mean of its divisors is an integer number (17384088).

Almost surely, 2^101559561 is an apocalyptic number.

It is an amenable number.

101559561 is a deficient number, since it is larger than the sum of its proper divisors (37513143).

101559561 is an equidigital number, since it uses as much as digits as its factorization.

101559561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914991.

The product of its (nonzero) digits is 6750, while the sum is 33.

The square root of 101559561 is about 10077.6763690843. The cubic root of 101559561 is about 466.5593941073.

The spelling of 101559561 in words is "one hundred one million, five hundred fifty-nine thousand, five hundred sixty-one".