104994521 has 4 divisors (see below), whose sum is σ = 105326052. Its totient is φ = 104662992.

The previous prime is 104994511. The next prime is 104994541. The reversal of 104994521 is 125499401.

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 9834496 + 95160025 = 3136^2 + 9755^2 .

It is a cyclic number.

It is not a de Polignac number, because 104994521 - 2¹⁸ = 104732377 is a prime.

It is a super-2 number, since 2×104994521² = 22047698880038882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104994511) 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, 165290 + ... + 165923.

It is an arithmetic number, because the mean of its divisors is an integer number (26331513).

Almost surely, 2^104994521 is an apocalyptic number.

It is an amenable number.

104994521 is a deficient number, since it is larger than the sum of its proper divisors (331531).

104994521 is an equidigital number, since it uses as much as digits as its factorization.

104994521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331530.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 104994521 is about 10246.6834146469. The cubic root of 104994521 is about 471.7611920968.

The spelling of 104994521 in words is "one hundred four million, nine hundred ninety-four thousand, five hundred twenty-one".