2557166841 has 20 divisors (see below), whose sum is σ = 3986053632. Its totient is φ = 1630655928.

The previous prime is 2557166797. The next prime is 2557166861. The reversal of 2557166841 is 1486617552.

2557166841 is a `hidden beast` number, since 2 + 557 + 16 + 6 + 84 + 1 = 666.

2557166841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2557166841 - 2²² = 2552972537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2557166861) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 684441 + ... + 688166.

Almost surely, 2^2557166841 is an apocalyptic number.

It is an amenable number.

2557166841 is a deficient number, since it is larger than the sum of its proper divisors (1428886791).

2557166841 is a wasteful number, since it uses less digits than its factorization.

2557166841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372642 (or 1372633 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2557166841 is about 50568.4372014797. The cubic root of 2557166841 is about 1367.4759217130.

The spelling of 2557166841 in words is "two billion, five hundred fifty-seven million, one hundred sixty-six thousand, eight hundred forty-one".