52013281 has 4 divisors (see below), whose sum is σ = 54274752. Its totient is φ = 49751812.

The previous prime is 52013267. The next prime is 52013321. The reversal of 52013281 is 18231025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52013281 - 2¹³ = 52005089 is a prime.

It is a super-2 number, since 2×52013281² = 5410762800769922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52013201) 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, 1130701 + ... + 1130746.

It is an arithmetic number, because the mean of its divisors is an integer number (13568688).

Almost surely, 2^52013281 is an apocalyptic number.

It is an amenable number.

52013281 is a deficient number, since it is larger than the sum of its proper divisors (2261471).

52013281 is a wasteful number, since it uses less digits than its factorization.

52013281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261470.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 52013281 is about 7212.0233638002. The cubic root of 52013281 is about 373.2828895670.

The spelling of 52013281 in words is "fifty-two million, thirteen thousand, two hundred eighty-one".