100587561 has 8 divisors (see below), whose sum is σ = 134248800. Its totient is φ = 66992352.

The previous prime is 100587541. The next prime is 100587581. The reversal of 100587561 is 165785001.

It is an interprime number because it is at equal distance from previous prime (100587541) and next prime (100587581).

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

It is not a de Polignac number, because 100587561 - 2²² = 96393257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100587511) 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, 12835 + ... + 19128.

It is an arithmetic number, because the mean of its divisors is an integer number (16781100).

Almost surely, 2^100587561 is an apocalyptic number.

It is an amenable number.

100587561 is a deficient number, since it is larger than the sum of its proper divisors (33661239).

100587561 is a wasteful number, since it uses less digits than its factorization.

100587561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33015.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 100587561 is about 10029.3350228218. The cubic root of 100587561 is about 465.0661808914.

The spelling of 100587561 in words is "one hundred million, five hundred eighty-seven thousand, five hundred sixty-one".