557965121 has 16 divisors (see below), whose sum is σ = 642418560. Its totient is φ = 474714240.

The previous prime is 557965117. The next prime is 557965127. The reversal of 557965121 is 121569755.

It is not a de Polignac number, because 557965121 - 2² = 557965117 is a prime.

It is a super-2 number, since 2×557965121² = 622650152505089282, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (557965127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823835 + ... + 824511.

It is an arithmetic number, because the mean of its divisors is an integer number (40151160).

Almost surely, 2^557965121 is an apocalyptic number.

It is an amenable number.

557965121 is a deficient number, since it is larger than the sum of its proper divisors (84453439).

557965121 is a wasteful number, since it uses less digits than its factorization.

557965121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 94500, while the sum is 41.

The square root of 557965121 is about 23621.2853375933. The cubic root of 557965121 is about 823.2574771895.

The spelling of 557965121 in words is "five hundred fifty-seven million, nine hundred sixty-five thousand, one hundred twenty-one".