53051281 has 8 divisors (see below), whose sum is σ = 53853800. Its totient is φ = 52254720.

The previous prime is 53051269. The next prime is 53051291. The reversal of 53051281 is 18215035.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1081600 + 51969681 = 1040^2 + 7209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53051281 - 2⁷ = 53051153 is a prime.

It is a super-2 number, since 2×53051281² = 5628876831481922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53051221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18385 + ... + 21073.

It is an arithmetic number, because the mean of its divisors is an integer number (6731725).

Almost surely, 2^53051281 is an apocalyptic number.

It is an amenable number.

53051281 is a deficient number, since it is larger than the sum of its proper divisors (802519).

53051281 is a wasteful number, since it uses less digits than its factorization.

53051281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 53051281 is about 7283.6310312920. The cubic root of 53051281 is about 375.7496848542.

The spelling of 53051281 in words is "fifty-three million, fifty-one thousand, two hundred eighty-one".