5656651 has 16 divisors (see below), whose sum is σ = 7596288. Its totient is φ = 4068000.

The previous prime is 5656649. The next prime is 5656691. The reversal of 5656651 is 1566565.

It is a cyclic number.

It is not a de Polignac number, because 5656651 - 2¹ = 5656649 is a prime.

5656651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5656621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (474768).

Almost surely, 2^5656651 is an apocalyptic number.

5656651 is a deficient number, since it is larger than the sum of its proper divisors (1939637).

5656651 is a wasteful number, since it uses less digits than its factorization.

5656651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682.

The product of its digits is 27000, while the sum is 34.

The square root of 5656651 is about 2378.3715016792. The cubic root of 5656651 is about 178.1776096166.

It can be divided in two parts, 5 and 656651, that added together give a palindrome (656656).

The spelling of 5656651 in words is "five million, six hundred fifty-six thousand, six hundred fifty-one".