56109423 has 4 divisors (see below), whose sum is σ = 74812568. Its totient is φ = 37406280.

The previous prime is 56109421. The next prime is 56109433. The reversal of 56109423 is 32490165.

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

It is not a de Polignac number, because 56109423 - 2¹ = 56109421 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 (56109421) 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, 9351568 + ... + 9351573.

It is an arithmetic number, because the mean of its divisors is an integer number (18703142).

Almost surely, 2^56109423 is an apocalyptic number.

56109423 is a deficient number, since it is larger than the sum of its proper divisors (18703145).

56109423 is a wasteful number, since it uses less digits than its factorization.

56109423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703144.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 56109423 is about 7490.6223372961. The cubic root of 56109423 is about 382.8352633183.

Adding to 56109423 its reverse (32490165), we get a palindrome (88599588).

The spelling of 56109423 in words is "fifty-six million, one hundred nine thousand, four hundred twenty-three".