557255811 has 8 divisors (see below), whose sum is σ = 849151744. Its totient is φ = 318431880.

The previous prime is 557255773. The next prime is 557255813. The reversal of 557255811 is 118552755.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 557255811 - 2⁶ = 557255747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557255811.

It is not an unprimeable number, because it can be changed into a prime (557255813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13267975 + ... + 13268016.

It is an arithmetic number, because the mean of its divisors is an integer number (106143968).

Almost surely, 2^557255811 is an apocalyptic number.

557255811 is a deficient number, since it is larger than the sum of its proper divisors (291895933).

557255811 is a wasteful number, since it uses less digits than its factorization.

557255811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26536001.

The product of its digits is 70000, while the sum is 39.

The square root of 557255811 is about 23606.2663502723. The cubic root of 557255811 is about 822.9084754571.

The spelling of 557255811 in words is "five hundred fifty-seven million, two hundred fifty-five thousand, eight hundred eleven".