557749645 has 8 divisors (see below), whose sum is σ = 669464856. Its totient is φ = 446089536.

The previous prime is 557749639. The next prime is 557749723. The reversal of 557749645 is 546947755.

557749645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20529961 + 537219684 = 4531^2 + 23178^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 557749645 - 2³ = 557749637 is a prime.

It is a super-3 number, since 3×557749645³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557749592 and 557749601.

It is a congruent number.

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, 13359 + ... + 35971.

It is an arithmetic number, because the mean of its divisors is an integer number (83683107).

Almost surely, 2^557749645 is an apocalyptic number.

It is an amenable number.

557749645 is a deficient number, since it is larger than the sum of its proper divisors (111715211).

557749645 is a wasteful number, since it uses less digits than its factorization.

557749645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27551.

The product of its digits is 5292000, while the sum is 52.

The square root of 557749645 is about 23616.7238413799. The cubic root of 557749645 is about 823.1514878474.

The spelling of 557749645 in words is "five hundred fifty-seven million, seven hundred forty-nine thousand, six hundred forty-five".