557007121 has 8 divisors (see below), whose sum is σ = 607932000. Its totient is φ = 506130240.

The previous prime is 557007103. The next prime is 557007179. The reversal of 557007121 is 121700755.

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

It is not a de Polignac number, because 557007121 - 2¹⁹ = 556482833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 557007121.

It is not an unprimeable number, because it can be changed into a prime (557007221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14905 + ... + 36553.

It is an arithmetic number, because the mean of its divisors is an integer number (75991500).

Almost surely, 2^557007121 is an apocalyptic number.

It is an amenable number.

557007121 is a deficient number, since it is larger than the sum of its proper divisors (50924879).

557007121 is a wasteful number, since it uses less digits than its factorization.

557007121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23999.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 557007121 is about 23600.9983051565. The cubic root of 557007121 is about 822.7860424227.

Adding to 557007121 its reverse (121700755), we get a palindrome (678707876).

The spelling of 557007121 in words is "five hundred fifty-seven million, seven thousand, one hundred twenty-one".