2057774561 has 4 divisors (see below), whose sum is σ = 2057912724. Its totient is φ = 2057636400.

The previous prime is 2057774531. The next prime is 2057774569. The reversal of 2057774561 is 1654777502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1909690000 + 148084561 = 43700^2 + 12169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057774561 - 2¹⁴ = 2057758177 is a prime.

It is a super-2 number, since 2×2057774561² = 8468872287797485442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057774569) 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, 43610 + ... + 77571.

It is an arithmetic number, because the mean of its divisors is an integer number (514478181).

Almost surely, 2^2057774561 is an apocalyptic number.

It is an amenable number.

2057774561 is a deficient number, since it is larger than the sum of its proper divisors (138163).

2057774561 is a wasteful number, since it uses less digits than its factorization.

2057774561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138162.

The product of its (nonzero) digits is 411600, while the sum is 44.

The square root of 2057774561 is about 45362.7001070263. The cubic root of 2057774561 is about 1271.9379677253.

The spelling of 2057774561 in words is "two billion, fifty-seven million, seven hundred seventy-four thousand, five hundred sixty-one".