104505145 has 4 divisors (see below), whose sum is σ = 125406180. Its totient is φ = 83604112.

The previous prime is 104505143. The next prime is 104505161. The reversal of 104505145 is 541505401.

It is a happy number.

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 81234169 + 23270976 = 9013^2 + 4824^2 .

It is a cyclic number.

It is not a de Polignac number, because 104505145 - 2¹ = 104505143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104505143) 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, 10450510 + ... + 10450519.

It is an arithmetic number, because the mean of its divisors is an integer number (31351545).

Almost surely, 2^104505145 is an apocalyptic number.

It is an amenable number.

104505145 is a deficient number, since it is larger than the sum of its proper divisors (20901035).

104505145 is an equidigital number, since it uses as much as digits as its factorization.

104505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20901034.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 104505145 is about 10222.7757972089. The cubic root of 104505145 is about 471.0270959269.

The spelling of 104505145 in words is "one hundred four million, five hundred five thousand, one hundred forty-five".