5431643 has 4 divisors (see below), whose sum is σ = 6207600. Its totient is φ = 4655688.

The previous prime is 5431627. The next prime is 5431661. The reversal of 5431643 is 3461345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3461345 = 5 ⋅692269.

It is a cyclic number.

It is not a de Polignac number, because 5431643 - 2⁴ = 5431627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5431043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387968 + ... + 387981.

It is an arithmetic number, because the mean of its divisors is an integer number (1551900).

Almost surely, 2^5431643 is an apocalyptic number.

5431643 is a deficient number, since it is larger than the sum of its proper divisors (775957).

5431643 is an equidigital number, since it uses as much as digits as its factorization.

5431643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775956.

The product of its digits is 4320, while the sum is 26.

The square root of 5431643 is about 2330.5885522760. The cubic root of 5431643 is about 175.7830811575.

Adding to 5431643 its reverse (3461345), we get a palindrome (8892988).

The spelling of 5431643 in words is "five million, four hundred thirty-one thousand, six hundred forty-three".