557135421 has 8 divisors (see below), whose sum is σ = 742977984. Its totient is φ = 371358240.

The previous prime is 557135399. The next prime is 557135431. The reversal of 557135421 is 124531755.

557135421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 557135421 - 2⁵ = 557135389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557135431) 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, 9280 + ... + 34646.

It is an arithmetic number, because the mean of its divisors is an integer number (92872248).

Almost surely, 2^557135421 is an apocalyptic number.

It is an amenable number.

557135421 is a deficient number, since it is larger than the sum of its proper divisors (185842563).

557135421 is a wasteful number, since it uses less digits than its factorization.

557135421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32691.

The product of its digits is 21000, while the sum is 33.

The square root of 557135421 is about 23603.7162540139. The cubic root of 557135421 is about 822.8492105829.

The spelling of 557135421 in words is "five hundred fifty-seven million, one hundred thirty-five thousand, four hundred twenty-one".