43155423 has 10 divisors (see below), whose sum is σ = 64466864. Its totient is φ = 28770228.

The previous prime is 43155421. The next prime is 43155439. The reversal of 43155423 is 32455134.

It is not a de Polignac number, because 43155423 - 2¹ = 43155421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43155421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 266311 + ... + 266472.

Almost surely, 2^43155423 is an apocalyptic number.

43155423 is a deficient number, since it is larger than the sum of its proper divisors (21311441).

43155423 is an equidigital number, since it uses as much as digits as its factorization.

43155423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532795 (or 532786 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 43155423 is about 6569.2787275317. The cubic root of 43155423 is about 350.7613982177.

The spelling of 43155423 in words is "forty-three million, one hundred fifty-five thousand, four hundred twenty-three".