557020223 has 4 divisors (see below), whose sum is σ = 558673440. Its totient is φ = 555367008.

The previous prime is 557020213. The next prime is 557020267. The reversal of 557020223 is 322020755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557020223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557020192 and 557020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557020213) 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, 826103 + ... + 826776.

It is an arithmetic number, because the mean of its divisors is an integer number (139668360).

Almost surely, 2^557020223 is an apocalyptic number.

557020223 is a deficient number, since it is larger than the sum of its proper divisors (1653217).

557020223 is a wasteful number, since it uses less digits than its factorization.

557020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653216.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 557020223 is about 23601.2758765284. The cubic root of 557020223 is about 822.7924936018.

Adding to 557020223 its reverse (322020755), we get a palindrome (879040978).

The spelling of 557020223 in words is "five hundred fifty-seven million, twenty thousand, two hundred twenty-three".