2057557841 has 4 divisors (see below), whose sum is σ = 2057704884. Its totient is φ = 2057410800.

The previous prime is 2057557807. The next prime is 2057557871. The reversal of 2057557841 is 1487557502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1487557502 = 2 ⋅743778751.

It can be written as a sum of positive squares in 2 ways, for example, as 1986930625 + 70627216 = 44575^2 + 8404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057557841 - 2³⁰ = 983816017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2057557792 and 2057557801.

It is not an unprimeable number, because it can be changed into a prime (2057557871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50030 + ... + 81351.

It is an arithmetic number, because the mean of its divisors is an integer number (514426221).

Almost surely, 2^2057557841 is an apocalyptic number.

It is an amenable number.

2057557841 is a deficient number, since it is larger than the sum of its proper divisors (147043).

2057557841 is a wasteful number, since it uses less digits than its factorization.

2057557841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147042.

The product of its (nonzero) digits is 392000, while the sum is 44.

The square root of 2057557841 is about 45360.3112974327. The cubic root of 2057557841 is about 1271.8933136478.

The spelling of 2057557841 in words is "two billion, fifty-seven million, five hundred fifty-seven thousand, eight hundred forty-one".