6458212261 has 4 divisors (see below), whose sum is σ = 6458524492. Its totient is φ = 6457900032.

The previous prime is 6458212231. The next prime is 6458212303. The reversal of 6458212261 is 1622128546.

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 696643236 + 5761569025 = 26394^2 + 75905^2 .

It is a cyclic number.

It is not a de Polignac number, because 6458212261 - 2⁷ = 6458212133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6458212261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6458212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122706 + ... + 167251.

It is an arithmetic number, because the mean of its divisors is an integer number (1614631123).

Almost surely, 2^6458212261 is an apocalyptic number.

It is an amenable number.

6458212261 is a deficient number, since it is larger than the sum of its proper divisors (312231).

6458212261 is a wasteful number, since it uses less digits than its factorization.

6458212261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312230.

The product of its digits is 46080, while the sum is 37.

The square root of 6458212261 is about 80363.0030611102. The cubic root of 6458212261 is about 1862.2476644227.

The spelling of 6458212261 in words is "six billion, four hundred fifty-eight million, two hundred twelve thousand, two hundred sixty-one".