5421565 has 4 divisors (see below), whose sum is σ = 6505884. Its totient is φ = 4337248.

The previous prime is 5421557. The next prime is 5421571. The reversal of 5421565 is 5651245.

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 3541924 + 1879641 = 1882^2 + 1371^2 .

It is a cyclic number.

It is not a de Polignac number, because 5421565 - 2³ = 5421557 is a prime.

It is a Duffinian number.

5421565 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542152 + ... + 542161.

It is an arithmetic number, because the mean of its divisors is an integer number (1626471).

Almost surely, 2^5421565 is an apocalyptic number.

It is an amenable number.

5421565 is a deficient number, since it is larger than the sum of its proper divisors (1084319).

5421565 is a wasteful number, since it uses less digits than its factorization.

5421565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084318.

The product of its digits is 6000, while the sum is 28.

The square root of 5421565 is about 2328.4254336354. The cubic root of 5421565 is about 175.6742964751.

The spelling of 5421565 in words is "five million, four hundred twenty-one thousand, five hundred sixty-five".