104809545 has 24 divisors (see below), whose sum is σ = 188400576. Its totient is φ = 55897776.

The previous prime is 104809501. The next prime is 104809559. The reversal of 104809545 is 545908401.

104809545 is a `hidden beast` number, since 104 + 8 + 0 + 9 + 545 = 666.

It is not a de Polignac number, because 104809545 - 2¹⁰ = 104808521 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41917 + ... + 44346.

It is an arithmetic number, because the mean of its divisors is an integer number (7850024).

Almost surely, 2^104809545 is an apocalyptic number.

104809545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104809545 is a deficient number, since it is larger than the sum of its proper divisors (83591031).

104809545 is an frugal number, since it uses more digits than its factorization.

104809545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86283 (or 86271 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 104809545 is about 10237.6532955556. The cubic root of 104809545 is about 471.4839846315.

The spelling of 104809545 in words is "one hundred four million, eight hundred nine thousand, five hundred forty-five".