56341721 has 4 divisors (see below), whose sum is σ = 56888832. Its totient is φ = 55794612.

The previous prime is 56341711. The next prime is 56341729. The reversal of 56341721 is 12714365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56341721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56341729) 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, 273401 + ... + 273606.

It is an arithmetic number, because the mean of its divisors is an integer number (14222208).

Almost surely, 2^56341721 is an apocalyptic number.

It is an amenable number.

56341721 is a deficient number, since it is larger than the sum of its proper divisors (547111).

56341721 is a wasteful number, since it uses less digits than its factorization.

56341721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547110.

The product of its digits is 5040, while the sum is 29.

The square root of 56341721 is about 7506.1122426993. The cubic root of 56341721 is about 383.3628598974.

The spelling of 56341721 in words is "fifty-six million, three hundred forty-one thousand, seven hundred twenty-one".