557749 has 4 divisors (see below), whose sum is σ = 569664. Its totient is φ = 545836.

The previous prime is 557747. The next prime is 557759. The reversal of 557749 is 947755.

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 557749 - 2¹ = 557747 is a prime.

It is a super-2 number, since 2×557749² = 622167894002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557741) 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, 5887 + ... + 5980.

It is an arithmetic number, because the mean of its divisors is an integer number (142416).

2⁵⁵⁷⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

557749 is a deficient number, since it is larger than the sum of its proper divisors (11915).

557749 is a wasteful number, since it uses less digits than its factorization.

557749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11914.

The product of its digits is 44100, while the sum is 37.

The square root of 557749 is about 746.8259502722. The cubic root of 557749 is about 82.3151170541.

The spelling of 557749 in words is "five hundred fifty-seven thousand, seven hundred forty-nine".