56449823 has 4 divisors (see below), whose sum is σ = 57514968. Its totient is φ = 55384680.

The previous prime is 56449819. The next prime is 56449873. The reversal of 56449823 is 32894465.

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 56449823 - 2² = 56449819 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 (56449873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532493 + ... + 532598.

It is an arithmetic number, because the mean of its divisors is an integer number (14378742).

Almost surely, 2^56449823 is an apocalyptic number.

56449823 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

56449823 is a deficient number, since it is larger than the sum of its proper divisors (1065145).

56449823 is a wasteful number, since it uses less digits than its factorization.

56449823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065144.

The product of its digits is 207360, while the sum is 41.

The square root of 56449823 is about 7513.3097234175. The cubic root of 56449823 is about 383.6078874097.

The spelling of 56449823 in words is "fifty-six million, four hundred forty-nine thousand, eight hundred twenty-three".