53315261 has 4 divisors (see below), whose sum is σ = 54756252. Its totient is φ = 51874272.

The previous prime is 53315243. The next prime is 53315267. The reversal of 53315261 is 16251335.

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 45306361 + 8008900 = 6731^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 53315261 - 2¹⁴ = 53298877 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 53315261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53315267) 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, 720440 + ... + 720513.

It is an arithmetic number, because the mean of its divisors is an integer number (13689063).

Almost surely, 2^53315261 is an apocalyptic number.

It is an amenable number.

53315261 is a deficient number, since it is larger than the sum of its proper divisors (1440991).

53315261 is a wasteful number, since it uses less digits than its factorization.

53315261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440990.

The product of its digits is 2700, while the sum is 26.

The square root of 53315261 is about 7301.7300004862. The cubic root of 53315261 is about 376.3718899572.

Adding to 53315261 its reverse (16251335), we get a palindrome (69566596).

The spelling of 53315261 in words is "fifty-three million, three hundred fifteen thousand, two hundred sixty-one".