557097730 has 32 divisors (see below), whose sum is σ = 1160547840. Its totient is φ = 188585280.

The previous prime is 557097703. The next prime is 557097731. The reversal of 557097730 is 37790755.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (557097731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44841 + ... + 55900.

It is an arithmetic number, because the mean of its divisors is an integer number (36267120).

Almost surely, 2^557097730 is an apocalyptic number.

557097730 is an abundant number, since it is smaller than the sum of its proper divisors (603450110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557097730 is a wasteful number, since it uses less digits than its factorization.

557097730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100834.

The product of its (nonzero) digits is 231525, while the sum is 43.

The square root of 557097730 is about 23602.9178280991. The cubic root of 557097730 is about 822.8306545264.

The spelling of 557097730 in words is "five hundred fifty-seven million, ninety-seven thousand, seven hundred thirty".