557281427 has 2 divisors, whose sum is σ = 557281428. Its totient is φ = 557281426.

The previous prime is 557281409. The next prime is 557281433. The reversal of 557281427 is 724182755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557281427 - 2⁶ = 557281363 is a prime.

It is not a weakly prime, because it can be changed into another prime (557281477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278640713 + 278640714.

It is an arithmetic number, because the mean of its divisors is an integer number (278640714).

Almost surely, 2^557281427 is an apocalyptic number.

557281427 is a deficient number, since it is larger than the sum of its proper divisors (1).

557281427 is an equidigital number, since it uses as much as digits as its factorization.

557281427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 41.

The square root of 557281427 is about 23606.8089118373. The cubic root of 557281427 is about 822.9210844481.

The spelling of 557281427 in words is "five hundred fifty-seven million, two hundred eighty-one thousand, four hundred twenty-seven".