557961287 has 8 divisors (see below), whose sum is σ = 601335840. Its totient is φ = 514651680.

The previous prime is 557961241. The next prime is 557961311. The reversal of 557961287 is 782169755.

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

It is a cyclic number.

It is not a de Polignac number, because 557961287 - 2⁶ = 557961223 is a prime.

It is a super-2 number, since 2×557961287² = 622641595581392738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557961227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414 + ... + 33492.

It is an arithmetic number, because the mean of its divisors is an integer number (75166980).

Almost surely, 2^557961287 is an apocalyptic number.

557961287 is a deficient number, since it is larger than the sum of its proper divisors (43374553).

557961287 is a wasteful number, since it uses less digits than its factorization.

557961287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32473.

The product of its digits is 1058400, while the sum is 50.

The square root of 557961287 is about 23621.2041818363. The cubic root of 557961287 is about 823.2555915421.

It can be divided in two parts, 5579 and 61287, that added together give a palindrome (66866).

The spelling of 557961287 in words is "five hundred fifty-seven million, nine hundred sixty-one thousand, two hundred eighty-seven".