557240323 has 4 divisors (see below), whose sum is σ = 557401320. Its totient is φ = 557079328.

The previous prime is 557240293. The next prime is 557240329. The reversal of 557240323 is 323042755.

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-557240323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557240329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75190 + ... + 82267.

It is an arithmetic number, because the mean of its divisors is an integer number (139350330).

Almost surely, 2^557240323 is an apocalyptic number.

557240323 is a deficient number, since it is larger than the sum of its proper divisors (160997).

557240323 is a wasteful number, since it uses less digits than its factorization.

557240323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160996.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 557240323 is about 23605.9382995042. The cubic root of 557240323 is about 822.9008515949.

The spelling of 557240323 in words is "five hundred fifty-seven million, two hundred forty thousand, three hundred twenty-three".