8557261 has 4 divisors (see below), whose sum is σ = 8653500. Its totient is φ = 8461024.

The previous prime is 8557253. The next prime is 8557267. The reversal of 8557261 is 1627558.

8557261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5978025 + 2579236 = 2445^2 + 1606^2 .

It is a cyclic number.

It is not a de Polignac number, because 8557261 - 2³ = 8557253 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 (8557267) 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, 47986 + ... + 48163.

It is an arithmetic number, because the mean of its divisors is an integer number (2163375).

Almost surely, 2^8557261 is an apocalyptic number.

It is an amenable number.

8557261 is a deficient number, since it is larger than the sum of its proper divisors (96239).

8557261 is an equidigital number, since it uses as much as digits as its factorization.

8557261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96238.

The product of its digits is 16800, while the sum is 34.

The square root of 8557261 is about 2925.2796447519. The cubic root of 8557261 is about 204.5400036916.

The spelling of 8557261 in words is "eight million, five hundred fifty-seven thousand, two hundred sixty-one".