57273166261 has 8 divisors (see below), whose sum is σ = 57891781080. Its totient is φ = 56655126528.

The previous prime is 57273166231. The next prime is 57273166289. The reversal of 57273166261 is 16266137275.

It can be written as a sum of positive squares in 4 ways, for example, as 1815271236 + 55457895025 = 42606^2 + 235495^2 .

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 57273166261 - 2¹³ = 57273158069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57273166231) 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, 58005 + ... + 343381.

It is an arithmetic number, because the mean of its divisors is an integer number (7236472635).

Almost surely, 2^57273166261 is an apocalyptic number.

It is an amenable number.

57273166261 is a deficient number, since it is larger than the sum of its proper divisors (618614819).

57273166261 is a wasteful number, since it uses less digits than its factorization.

57273166261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287543.

The product of its digits is 635040, while the sum is 46.

The spelling of 57273166261 in words is "fifty-seven billion, two hundred seventy-three million, one hundred sixty-six thousand, two hundred sixty-one".