104528581 has 4 divisors (see below), whose sum is σ = 104568192. Its totient is φ = 104488972.

The previous prime is 104528569. The next prime is 104528591. The reversal of 104528581 is 185825401.

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 104528581 - 2⁵ = 104528549 is a prime.

It is a super-2 number, since 2×104528581² = 21852448491747122, 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 (104528521) 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, 15541 + ... + 21226.

It is an arithmetic number, because the mean of its divisors is an integer number (26142048).

Almost surely, 2^104528581 is an apocalyptic number.

It is an amenable number.

104528581 is a deficient number, since it is larger than the sum of its proper divisors (39611).

104528581 is an equidigital number, since it uses as much as digits as its factorization.

104528581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39610.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 104528581 is about 10223.9219969638. The cubic root of 104528581 is about 471.0623036542.

The spelling of 104528581 in words is "one hundred four million, five hundred twenty-eight thousand, five hundred eighty-one".