43423451 has 2 divisors, whose sum is σ = 43423452. Its totient is φ = 43423450.

The previous prime is 43423439. The next prime is 43423453. The reversal of 43423451 is 15432434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43423451 - 2¹⁰ = 43422427 is a prime.

Together with 43423453, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43423451.

It is not a weakly prime, because it can be changed into another prime (43423453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711725 + 21711726.

It is an arithmetic number, because the mean of its divisors is an integer number (21711726).

Almost surely, 2^43423451 is an apocalyptic number.

43423451 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423451 is an equidigital number, since it uses as much as digits as its factorization.

43423451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 43423451 is about 6589.6472591482. The cubic root of 43423451 is about 351.4860650595.

Adding to 43423451 its reverse (15432434), we get a palindrome (58855885).

The spelling of 43423451 in words is "forty-three million, four hundred twenty-three thousand, four hundred fifty-one".