56491423 has 4 divisors (see below), whose sum is σ = 56506608. Its totient is φ = 56476240.

The previous prime is 56491417. The next prime is 56491441. The reversal of 56491423 is 32419465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56491423 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 (56491403) 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, 2190 + ... + 10852.

It is an arithmetic number, because the mean of its divisors is an integer number (14126652).

Almost surely, 2^56491423 is an apocalyptic number.

56491423 is a deficient number, since it is larger than the sum of its proper divisors (15185).

56491423 is an equidigital number, since it uses as much as digits as its factorization.

56491423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15184.

The product of its digits is 25920, while the sum is 34.

The square root of 56491423 is about 7516.0776339790. The cubic root of 56491423 is about 383.7020959701.

The spelling of 56491423 in words is "fifty-six million, four hundred ninety-one thousand, four hundred twenty-three".