2557081803 has 8 divisors (see below), whose sum is σ = 3501589648. Its totient is φ = 1658647584.

The previous prime is 2557081801. The next prime is 2557081829. The reversal of 2557081803 is 3081807552.

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

It is not a de Polignac number, because 2557081803 - 2¹ = 2557081801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557081801) 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 7 ways as a sum of consecutive naturals, for example, 11518276 + ... + 11518497.

It is an arithmetic number, because the mean of its divisors is an integer number (437698706).

Almost surely, 2^2557081803 is an apocalyptic number.

2557081803 is a deficient number, since it is larger than the sum of its proper divisors (944507845).

2557081803 is a wasteful number, since it uses less digits than its factorization.

2557081803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23036813.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 2557081803 is about 50567.5963735671. The cubic root of 2557081803 is about 1367.4607631783.

The spelling of 2557081803 in words is "two billion, five hundred fifty-seven million, eighty-one thousand, eight hundred three".