557255990 has 8 divisors (see below), whose sum is σ = 1003060800. Its totient is φ = 222902392.

The previous prime is 557255989. The next prime is 557255999. The reversal of 557255990 is 99552755.

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

It is a super-3 number, since 3×557255990³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557255999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27862790 + ... + 27862809.

It is an arithmetic number, because the mean of its divisors is an integer number (125382600).

Almost surely, 2^557255990 is an apocalyptic number.

557255990 is a deficient number, since it is larger than the sum of its proper divisors (445804810).

557255990 is a wasteful number, since it uses less digits than its factorization.

557255990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55725606.

The product of its (nonzero) digits is 708750, while the sum is 47.

The square root of 557255990 is about 23606.2701416382. The cubic root of 557255990 is about 822.9085635678.

The spelling of 557255990 in words is "five hundred fifty-seven million, two hundred fifty-five thousand, nine hundred ninety".