104562581 has 4 divisors (see below), whose sum is σ = 104737164. Its totient is φ = 104388000.

The previous prime is 104562571. The next prime is 104562593. The reversal of 104562581 is 185265401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77616100 + 26946481 = 8810^2 + 5191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104562581 is a prime.

It is a super-2 number, since 2×104562581² = 21866666690763122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104562511) 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, 86390 + ... + 87591.

It is an arithmetic number, because the mean of its divisors is an integer number (26184291).

Almost surely, 2^104562581 is an apocalyptic number.

It is an amenable number.

104562581 is a deficient number, since it is larger than the sum of its proper divisors (174583).

104562581 is an equidigital number, since it uses as much as digits as its factorization.

104562581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174582.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 104562581 is about 10225.5846287633. The cubic root of 104562581 is about 471.1133722454.

The spelling of 104562581 in words is "one hundred four million, five hundred sixty-two thousand, five hundred eighty-one".