56473213 has 4 divisors (see below), whose sum is σ = 56630880. Its totient is φ = 56315548.

The previous prime is 56473199. The next prime is 56473223. The reversal of 56473213 is 31237465.

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 56473213 - 2⁹ = 56472701 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 (56473223) 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, 78295 + ... + 79012.

It is an arithmetic number, because the mean of its divisors is an integer number (14157720).

Almost surely, 2^56473213 is an apocalyptic number.

It is an amenable number.

56473213 is a deficient number, since it is larger than the sum of its proper divisors (157667).

56473213 is a wasteful number, since it uses less digits than its factorization.

56473213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157666.

The product of its digits is 15120, while the sum is 31.

The square root of 56473213 is about 7514.8661332056. The cubic root of 56473213 is about 383.6608627722.

The spelling of 56473213 in words is "fifty-six million, four hundred seventy-three thousand, two hundred thirteen".