57440201281 has 4 divisors (see below), whose sum is σ = 57441388932. Its totient is φ = 57439013632.

The previous prime is 57440201261. The next prime is 57440201293. The reversal of 57440201281 is 18210204475.

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 55358560656 + 2081640625 = 235284^2 + 45625^2 .

It is a cyclic number.

It is not a de Polignac number, because 57440201281 - 2²³ = 57431812673 is a prime.

It is a super-2 number, since 2×57440201281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57440201261) 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, 518056 + ... + 619081.

It is an arithmetic number, because the mean of its divisors is an integer number (14360347233).

Almost surely, 2^57440201281 is an apocalyptic number.

It is an amenable number.

57440201281 is a deficient number, since it is larger than the sum of its proper divisors (1187651).

57440201281 is a wasteful number, since it uses less digits than its factorization.

57440201281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187650.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 57440201281 in words is "fifty-seven billion, four hundred forty million, two hundred one thousand, two hundred eighty-one".