8315261 has 4 divisors (see below), whose sum is σ = 8804412. Its totient is φ = 7826112.

The previous prime is 8315249. The next prime is 8315267. The reversal of 8315261 is 1625138.

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 5736025 + 2579236 = 2395^2 + 1606^2 .

It is a cyclic number.

It is not a de Polignac number, because 8315261 - 2¹⁸ = 8053117 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 8315261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8315267) 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, 244550 + ... + 244583.

It is an arithmetic number, because the mean of its divisors is an integer number (2201103).

Almost surely, 2^8315261 is an apocalyptic number.

It is an amenable number.

8315261 is a deficient number, since it is larger than the sum of its proper divisors (489151).

8315261 is a wasteful number, since it uses less digits than its factorization.

8315261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489150.

The product of its digits is 1440, while the sum is 26.

The square root of 8315261 is about 2883.6194270396. The cubic root of 8315261 is about 202.5934010020.

The spelling of 8315261 in words is "eight million, three hundred fifteen thousand, two hundred sixty-one".