23455543 has 2 divisors, whose sum is σ = 23455544. Its totient is φ = 23455542.

The previous prime is 23455541. The next prime is 23455559. The reversal of 23455543 is 34555432.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23455543 - 2¹ = 23455541 is a prime.

Together with 23455541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23455541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11727771 + 11727772.

It is an arithmetic number, because the mean of its divisors is an integer number (11727772).

Almost surely, 2^23455543 is an apocalyptic number.

23455543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23455543 is an equidigital number, since it uses as much as digits as its factorization.

23455543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 31.

The square root of 23455543 is about 4843.0922972828. The cubic root of 23455543 is about 286.2519785273.

The spelling of 23455543 in words is "twenty-three million, four hundred fifty-five thousand, five hundred forty-three".