855546261 has 4 divisors (see below), whose sum is σ = 1140728352. Its totient is φ = 570364172.

The previous prime is 855546247. The next prime is 855546271. The reversal of 855546261 is 162645558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855546261 - 2¹¹ = 855544213 is a prime.

It is a super-2 number, since 2×855546261² = 1463918809422160242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855546271) 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, 142591041 + ... + 142591046.

It is an arithmetic number, because the mean of its divisors is an integer number (285182088).

Almost surely, 2^855546261 is an apocalyptic number.

It is an amenable number.

855546261 is a deficient number, since it is larger than the sum of its proper divisors (285182091).

855546261 is a wasteful number, since it uses less digits than its factorization.

855546261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285182090.

The product of its digits is 288000, while the sum is 42.

The square root of 855546261 is about 29249.7224089392. The cubic root of 855546261 is about 949.3240846735.

The spelling of 855546261 in words is "eight hundred fifty-five million, five hundred forty-six thousand, two hundred sixty-one".