104396521 has 2 divisors, whose sum is σ = 104396522. Its totient is φ = 104396520.

The previous prime is 104396489. The next prime is 104396531. The reversal of 104396521 is 125693401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 45414121 = 7680^2 + 6739^2 .

It is an emirp because it is prime and its reverse (125693401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104396521 - 2⁵ = 104396489 is a prime.

It is a super-3 number, since 3×104396521³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (104396531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52198260 + 52198261.

It is an arithmetic number, because the mean of its divisors is an integer number (52198261).

Almost surely, 2^104396521 is an apocalyptic number.

It is an amenable number.

104396521 is a deficient number, since it is larger than the sum of its proper divisors (1).

104396521 is an equidigital number, since it uses as much as digits as its factorization.

104396521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 104396521 is about 10217.4615732089. The cubic root of 104396521 is about 470.8638421316.

The spelling of 104396521 in words is "one hundred four million, three hundred ninety-six thousand, five hundred twenty-one".