57266861 has 8 divisors (see below), whose sum is σ = 59781144. Its totient is φ = 54803520.

The previous prime is 57266857. The next prime is 57266887. The reversal of 57266861 is 16866275.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 57229225 = 194^2 + 7565^2 .

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 57266861 - 2² = 57266857 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 (57266801) 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, 10430 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (7472643).

Almost surely, 2^57266861 is an apocalyptic number.

It is an amenable number.

57266861 is a deficient number, since it is larger than the sum of its proper divisors (2514283).

57266861 is a wasteful number, since it uses less digits than its factorization.

57266861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25471.

The product of its digits is 120960, while the sum is 41.

The square root of 57266861 is about 7567.4870994274. The cubic root of 57266861 is about 385.4497717630.

The spelling of 57266861 in words is "fifty-seven million, two hundred sixty-six thousand, eight hundred sixty-one".