5145565 has 4 divisors (see below), whose sum is σ = 6174684. Its totient is φ = 4116448.

The previous prime is 5145529. The next prime is 5145589. The reversal of 5145565 is 5655415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5655415 = 5 ⋅1131083.

It can be written as a sum of positive squares in 2 ways, for example, as 3437316 + 1708249 = 1854^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 5145565 - 2⁹ = 5145053 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 514552 + ... + 514561.

It is an arithmetic number, because the mean of its divisors is an integer number (1543671).

Almost surely, 2^5145565 is an apocalyptic number.

It is an amenable number.

5145565 is a deficient number, since it is larger than the sum of its proper divisors (1029119).

5145565 is a wasteful number, since it uses less digits than its factorization.

5145565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029118.

The product of its digits is 15000, while the sum is 31.

The square root of 5145565 is about 2268.3837858705. The cubic root of 5145565 is about 172.6411642907.

The spelling of 5145565 in words is "five million, one hundred forty-five thousand, five hundred sixty-five".