5820145 has 4 divisors (see below), whose sum is σ = 6984180. Its totient is φ = 4656112.

The previous prime is 5820131. The next prime is 5820149. The reversal of 5820145 is 5410285.

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 1982464 + 3837681 = 1408^2 + 1959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5820145 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5820149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 582010 + ... + 582019.

It is an arithmetic number, because the mean of its divisors is an integer number (1746045).

Almost surely, 2^5820145 is an apocalyptic number.

It is an amenable number.

5820145 is a deficient number, since it is larger than the sum of its proper divisors (1164035).

5820145 is a wasteful number, since it uses less digits than its factorization.

5820145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164034.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 5820145 is about 2412.4976683927. The cubic root of 5820145 is about 179.8779522445.

The spelling of 5820145 in words is "five million, eight hundred twenty thousand, one hundred forty-five".