56348821 has 4 divisors (see below), whose sum is σ = 56722144. Its totient is φ = 55975500.

The previous prime is 56348819. The next prime is 56348839. The reversal of 56348821 is 12884365.

It is a happy number.

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 not a de Polignac number, because 56348821 - 2¹ = 56348819 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 (56348221) 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, 186435 + ... + 186736.

It is an arithmetic number, because the mean of its divisors is an integer number (14180536).

Almost surely, 2^56348821 is an apocalyptic number.

It is an amenable number.

56348821 is a deficient number, since it is larger than the sum of its proper divisors (373323).

56348821 is a wasteful number, since it uses less digits than its factorization.

56348821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373322.

The product of its digits is 46080, while the sum is 37.

The square root of 56348821 is about 7506.5851756974. The cubic root of 56348821 is about 383.3789626003.

The spelling of 56348821 in words is "fifty-six million, three hundred forty-eight thousand, eight hundred twenty-one".