557780557 has 4 divisors (see below), whose sum is σ = 590591196. Its totient is φ = 524969920.

The previous prime is 557780539. The next prime is 557780581. The reversal of 557780557 is 755087755.

557780557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755087755 = 5 ⋅151017551.

It can be written as a sum of positive squares in 2 ways, for example, as 313608681 + 244171876 = 17709^2 + 15626^2 .

It is a cyclic number.

It is not a de Polignac number, because 557780557 - 2¹⁵ = 557747789 is a prime.

It is a super-2 number, since 2×557780557² = 622238299534460498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 557780557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557700557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16405294 + ... + 16405327.

It is an arithmetic number, because the mean of its divisors is an integer number (147647799).

Almost surely, 2^557780557 is an apocalyptic number.

It is an amenable number.

557780557 is a deficient number, since it is larger than the sum of its proper divisors (32810639).

557780557 is a wasteful number, since it uses less digits than its factorization.

557780557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810638.

The product of its (nonzero) digits is 1715000, while the sum is 49.

The square root of 557780557 is about 23617.3782837977. The cubic root of 557780557 is about 823.1666946634.

The spelling of 557780557 in words is "five hundred fifty-seven million, seven hundred eighty thousand, five hundred fifty-seven".