557741561 has 16 divisors (see below), whose sum is σ = 638803200. Its totient is φ = 482692608.

The previous prime is 557741549. The next prime is 557741563. The reversal of 557741561 is 165147755.

It is a cyclic number.

It is not a de Polignac number, because 557741561 - 2²² = 553547257 is a prime.

It is a super-2 number, since 2×557741561² = 622151297733433442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (557741563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12320 + ... + 35598.

It is an arithmetic number, because the mean of its divisors is an integer number (39925200).

Almost surely, 2^557741561 is an apocalyptic number.

It is an amenable number.

557741561 is a deficient number, since it is larger than the sum of its proper divisors (81061639).

557741561 is a wasteful number, since it uses less digits than its factorization.

557741561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23408.

The product of its digits is 147000, while the sum is 41.

The square root of 557741561 is about 23616.5526908565. The cubic root of 557741561 is about 823.1475109204.

The spelling of 557741561 in words is "five hundred fifty-seven million, seven hundred forty-one thousand, five hundred sixty-one".