8455343261 has 4 divisors (see below), whose sum is σ = 8952716412. Its totient is φ = 7957970112.

The previous prime is 8455343249. The next prime is 8455343339. The reversal of 8455343261 is 1623435548.

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 5208508900 + 3246834361 = 72170^2 + 56981^2 .

It is a cyclic number.

It is not a de Polignac number, because 8455343261 - 2²⁶ = 8388234397 is a prime.

It is a super-2 number, since 2×8455343261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8455343201) 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, 248686550 + ... + 248686583.

It is an arithmetic number, because the mean of its divisors is an integer number (2238179103).

Almost surely, 2^8455343261 is an apocalyptic number.

It is an amenable number.

8455343261 is a deficient number, since it is larger than the sum of its proper divisors (497373151).

8455343261 is a wasteful number, since it uses less digits than its factorization.

8455343261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497373150.

The product of its digits is 345600, while the sum is 41.

The square root of 8455343261 is about 91952.9404695685. The cubic root of 8455343261 is about 2037.2472853340.

The spelling of 8455343261 in words is "eight billion, four hundred fifty-five million, three hundred forty-three thousand, two hundred sixty-one".