5651565 has 32 divisors (see below), whose sum is σ = 9849600. Its totient is φ = 2755584.

The previous prime is 5651561. The next prime is 5651573.

5651565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5651565 - 2² = 5651561 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651561) 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 31 ways as a sum of consecutive naturals, for example, 9136 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^5651565 is an apocalyptic number.

It is an amenable number.

5651565 is a deficient number, since it is larger than the sum of its proper divisors (4198035).

5651565 is a wasteful number, since it uses less digits than its factorization.

5651565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its digits is 22500, while the sum is 33.

The square root of 5651565 is about 2377.3020422319. The cubic root of 5651565 is about 178.1241926710.

It can be divided in two parts, 5651 and 565, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 5651565 in words is "five million, six hundred fifty-one thousand, five hundred sixty-five".