53369281 has 12 divisors (see below), whose sum is σ = 63762708. Its totient is φ = 44507232.

The previous prime is 53369279. The next prime is 53369291. The reversal of 53369281 is 18296335.

53369281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50183056 + 3186225 = 7084^2 + 1785^2 .

It is not a de Polignac number, because 53369281 - 2¹ = 53369279 is a prime.

It is a super-4 number, since 4×53369281⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 53369281.

It is not an unprimeable number, because it can be changed into a prime (53369221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12906 + ... + 16531.

It is an arithmetic number, because the mean of its divisors is an integer number (5313559).

Almost surely, 2^53369281 is an apocalyptic number.

It is an amenable number.

53369281 is a deficient number, since it is larger than the sum of its proper divisors (10393427).

53369281 is a wasteful number, since it uses less digits than its factorization.

53369281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29488 (or 29481 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 53369281 is about 7305.4281873139. The cubic root of 53369281 is about 376.4989626826.

The spelling of 53369281 in words is "fifty-three million, three hundred sixty-nine thousand, two hundred eighty-one".