557017723 has 4 divisors (see below), whose sum is σ = 558700888. Its totient is φ = 555334560.

The previous prime is 557017679. The next prime is 557017729. The reversal of 557017723 is 327710755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327710755 = 5 ⋅65542151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557017723 is a prime.

It is a super-2 number, since 2×557017723² = 620537487472209458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557017729) 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, 841086 + ... + 841747.

It is an arithmetic number, because the mean of its divisors is an integer number (139675222).

Almost surely, 2^557017723 is an apocalyptic number.

557017723 is a deficient number, since it is larger than the sum of its proper divisors (1683165).

557017723 is a wasteful number, since it uses less digits than its factorization.

557017723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683164.

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 557017723 is about 23601.2229132306. Note that the first 3 decimals coincide. The cubic root of 557017723 is about 822.7912626565.

The spelling of 557017723 in words is "five hundred fifty-seven million, seventeen thousand, seven hundred twenty-three".