557663945 has 8 divisors (see below), whose sum is σ = 669323520. Its totient is φ = 446046640.

The previous prime is 557663839. The next prime is 557663993. The reversal of 557663945 is 549366755.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-557663945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 557663893 and 557663902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45926 + ... + 56784.

It is an arithmetic number, because the mean of its divisors is an integer number (83665440).

Almost surely, 2^557663945 is an apocalyptic number.

It is an amenable number.

557663945 is a deficient number, since it is larger than the sum of its proper divisors (111659575).

557663945 is a wasteful number, since it uses less digits than its factorization.

557663945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21135.

The product of its digits is 3402000, while the sum is 50.

The square root of 557663945 is about 23614.9093794577. The cubic root of 557663945 is about 823.1093257432.

The spelling of 557663945 in words is "five hundred fifty-seven million, six hundred sixty-three thousand, nine hundred forty-five".