557756545 has 4 divisors (see below), whose sum is σ = 669307860. Its totient is φ = 446205232.

The previous prime is 557756539. The next prime is 557756561. The reversal of 557756545 is 545657755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 312865344 + 244891201 = 17688^2 + 15649^2 .

It is a cyclic number.

It is not a de Polignac number, because 557756545 - 2²¹ = 555659393 is a prime.

It is a super-2 number, since 2×557756545² = 622184726980674050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55775650 + ... + 55775659.

It is an arithmetic number, because the mean of its divisors is an integer number (167326965).

Almost surely, 2^557756545 is an apocalyptic number.

It is an amenable number.

557756545 is a deficient number, since it is larger than the sum of its proper divisors (111551315).

557756545 is a wasteful number, since it uses less digits than its factorization.

557756545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111551314.

The product of its digits is 3675000, while the sum is 49.

The square root of 557756545 is about 23616.8699238489. The cubic root of 557756545 is about 823.1548822747.

The spelling of 557756545 in words is "five hundred fifty-seven million, seven hundred fifty-six thousand, five hundred forty-five".