104521493 has 4 divisors (see below), whose sum is σ = 104583948. Its totient is φ = 104459040.

The previous prime is 104521463. The next prime is 104521507. The reversal of 104521493 is 394125401.

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 59336209 + 45185284 = 7703^2 + 6722^2 .

It is a cyclic number.

It is not a de Polignac number, because 104521493 - 2¹² = 104517397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104521463) 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, 28646 + ... + 32087.

It is an arithmetic number, because the mean of its divisors is an integer number (26145987).

Almost surely, 2^104521493 is an apocalyptic number.

It is an amenable number.

104521493 is a deficient number, since it is larger than the sum of its proper divisors (62455).

104521493 is an equidigital number, since it uses as much as digits as its factorization.

104521493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62454.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 104521493 is about 10223.5753530749. The cubic root of 104521493 is about 471.0516559600.

Adding to 104521493 its reverse (394125401), we get a palindrome (498646894).

The spelling of 104521493 in words is "one hundred four million, five hundred twenty-one thousand, four hundred ninety-three".