557287901 has 2 divisors, whose sum is σ = 557287902. Its totient is φ = 557287900.

The previous prime is 557287891. The next prime is 557287919. The reversal of 557287901 is 109782755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406022500 + 151265401 = 20150^2 + 12299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557287901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557287201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278643950 + 278643951.

It is an arithmetic number, because the mean of its divisors is an integer number (278643951).

Almost surely, 2^557287901 is an apocalyptic number.

It is an amenable number.

557287901 is a deficient number, since it is larger than the sum of its proper divisors (1).

557287901 is an equidigital number, since it uses as much as digits as its factorization.

557287901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 557287901 is about 23606.9460328946. The cubic root of 557287901 is about 822.9242710908.

The spelling of 557287901 in words is "five hundred fifty-seven million, two hundred eighty-seven thousand, nine hundred one".