2557591063 has 4 divisors (see below), whose sum is σ = 2559573448. Its totient is φ = 2555608680.

The previous prime is 2557591033. The next prime is 2557591079. The reversal of 2557591063 is 3601957552.

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

It is a cyclic number.

It is not a de Polignac number, because 2557591063 - 2¹³ = 2557582871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557591033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989256 + ... + 991837.

It is an arithmetic number, because the mean of its divisors is an integer number (639893362).

Almost surely, 2^2557591063 is an apocalyptic number.

2557591063 is a deficient number, since it is larger than the sum of its proper divisors (1982385).

2557591063 is a wasteful number, since it uses less digits than its factorization.

2557591063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982384.

The product of its (nonzero) digits is 283500, while the sum is 43.

The square root of 2557591063 is about 50572.6315609540. The cubic root of 2557591063 is about 1367.5515368149.

The spelling of 2557591063 in words is "two billion, five hundred fifty-seven million, five hundred ninety-one thousand, sixty-three".