56531423 has 4 divisors (see below), whose sum is σ = 60880008. Its totient is φ = 52182840.

The previous prime is 56531359. The next prime is 56531429. The reversal of 56531423 is 32413565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56531423 - 2⁶ = 56531359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56531429) 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, 2174273 + ... + 2174298.

It is an arithmetic number, because the mean of its divisors is an integer number (15220002).

Almost surely, 2^56531423 is an apocalyptic number.

56531423 is a deficient number, since it is larger than the sum of its proper divisors (4348585).

56531423 is a wasteful number, since it uses less digits than its factorization.

56531423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348584.

The product of its digits is 10800, while the sum is 29.

The square root of 56531423 is about 7518.7381255102. The cubic root of 56531423 is about 383.7926375186.

Adding to 56531423 its reverse (32413565), we get a palindrome (88944988).

The spelling of 56531423 in words is "fifty-six million, five hundred thirty-one thousand, four hundred twenty-three".