57355784261 has 8 divisors (see below), whose sum is σ = 57855097080. Its totient is φ = 56858574528.

The previous prime is 57355784243. The next prime is 57355784287. The reversal of 57355784261 is 16248755375.

57355784261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6971248036 + 50384536225 = 83494^2 + 224465^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57355784261 - 2¹⁰ = 57355783237 is a prime.

It is a super-2 number, since 2×57355784261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57355786261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470966 + ... + 580103.

It is an arithmetic number, because the mean of its divisors is an integer number (7231887135).

Almost surely, 2^57355784261 is an apocalyptic number.

It is an amenable number.

57355784261 is a deficient number, since it is larger than the sum of its proper divisors (499312819).

57355784261 is a wasteful number, since it uses less digits than its factorization.

57355784261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051543.

The product of its digits is 7056000, while the sum is 53.

The spelling of 57355784261 in words is "fifty-seven billion, three hundred fifty-five million, seven hundred eighty-four thousand, two hundred sixty-one".