557561423 has 8 divisors (see below), whose sum is σ = 594183168. Its totient is φ = 521971384.

The previous prime is 557561401. The next prime is 557561437. The reversal of 557561423 is 324165755.

It is a happy number.

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

It is not a de Polignac number, because 557561423 - 2¹² = 557557327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557531423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256811 + ... + 258972.

It is an arithmetic number, because the mean of its divisors is an integer number (74272896).

Almost surely, 2^557561423 is an apocalyptic number.

557561423 is a deficient number, since it is larger than the sum of its proper divisors (36621745).

557561423 is a wasteful number, since it uses less digits than its factorization.

557561423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515853.

The product of its digits is 126000, while the sum is 38.

The square root of 557561423 is about 23612.7385747609. The cubic root of 557561423 is about 823.0588819907.

The spelling of 557561423 in words is "five hundred fifty-seven million, five hundred sixty-one thousand, four hundred twenty-three".