102080561 has 24 divisors (see below), whose sum is σ = 116188800. Its totient is φ = 89575200.

The previous prime is 102080549. The next prime is 102080591. The reversal of 102080561 is 165080201.

It is not a de Polignac number, because 102080561 - 2¹⁴ = 102064177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102080501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 563891 + ... + 564071.

It is an arithmetic number, because the mean of its divisors is an integer number (4841200).

Almost surely, 2^102080561 is an apocalyptic number.

102080561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102080561 is a deficient number, since it is larger than the sum of its proper divisors (14108239).

102080561 is a wasteful number, since it uses less digits than its factorization.

102080561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 102080561 is about 10103.4925149673. The cubic root of 102080561 is about 467.3558494437.

The spelling of 102080561 in words is "one hundred two million, eighty thousand, five hundred sixty-one".