53726825281 has 4 divisors (see below), whose sum is σ = 53727386500. Its totient is φ = 53726264064.

The previous prime is 53726825261. The next prime is 53726825323. The reversal of 53726825281 is 18252862735.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7913703681 + 45813121600 = 88959^2 + 214040^2 .

It is a cyclic number.

It is not a de Polignac number, because 53726825281 - 2²⁷ = 53592607553 is a prime.

It is a super-2 number, since 2×53726825281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53726825261) 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, 96936 + ... + 341833.

It is an arithmetic number, because the mean of its divisors is an integer number (13431846625).

Almost surely, 2^53726825281 is an apocalyptic number.

It is an amenable number.

53726825281 is a deficient number, since it is larger than the sum of its proper divisors (561219).

53726825281 is a wasteful number, since it uses less digits than its factorization.

53726825281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561218.

The product of its digits is 1612800, while the sum is 49.

The spelling of 53726825281 in words is "fifty-three billion, seven hundred twenty-six million, eight hundred twenty-five thousand, two hundred eighty-one".