5656431 has 16 divisors (see below), whose sum is σ = 8281728. Its totient is φ = 3405600.

The previous prime is 5656423. The next prime is 5656439. The reversal of 5656431 is 1346565.

It is an interprime number because it is at equal distance from previous prime (5656423) and next prime (5656439).

It is not a de Polignac number, because 5656431 - 2³ = 5656423 is a prime.

It is a super-2 number, since 2×5656431² = 63990423315522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656439) 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, 5500 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (517608).

Almost surely, 2^5656431 is an apocalyptic number.

5656431 is a deficient number, since it is larger than the sum of its proper divisors (2625297).

5656431 is a wasteful number, since it uses less digits than its factorization.

5656431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its digits is 10800, while the sum is 30.

The square root of 5656431 is about 2378.3252510958. The cubic root of 5656431 is about 178.1752996760.

It can be divided in two parts, 565 and 6431, that added together give a palindrome (6996).

The spelling of 5656431 in words is "five million, six hundred fifty-six thousand, four hundred thirty-one".