557520385 has 4 divisors (see below), whose sum is σ = 669024468. Its totient is φ = 446016304.

The previous prime is 557520377. The next prime is 557520427. The reversal of 557520385 is 583025755.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97160449 + 460359936 = 9857^2 + 21456^2 .

It is a cyclic number.

It is not a de Polignac number, because 557520385 - 2³ = 557520377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55752034 + ... + 55752043.

It is an arithmetic number, because the mean of its divisors is an integer number (167256117).

Almost surely, 2^557520385 is an apocalyptic number.

It is an amenable number.

557520385 is a deficient number, since it is larger than the sum of its proper divisors (111504083).

557520385 is a wasteful number, since it uses less digits than its factorization.

557520385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111504082.

The product of its (nonzero) digits is 210000, while the sum is 40.

The square root of 557520385 is about 23611.8695786674. The cubic root of 557520385 is about 823.0386883894.

The spelling of 557520385 in words is "five hundred fifty-seven million, five hundred twenty thousand, three hundred eighty-five".