52530561 has 12 divisors (see below), whose sum is σ = 80341092. Its totient is φ = 32960256.

The previous prime is 52530509. The next prime is 52530587. The reversal of 52530561 is 16503525.

52530561 is a `hidden beast` number, since 52 + 53 + 0 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45481536 + 7049025 = 6744^2 + 2655^2 .

It is not a de Polignac number, because 52530561 - 2¹⁰ = 52529537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52530661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171516 + ... + 171821.

It is an arithmetic number, because the mean of its divisors is an integer number (6695091).

Almost surely, 2^52530561 is an apocalyptic number.

52530561 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

52530561 is a deficient number, since it is larger than the sum of its proper divisors (27810531).

52530561 is a wasteful number, since it uses less digits than its factorization.

52530561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343360 (or 343357 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 52530561 is about 7247.7969756334. The cubic root of 52530561 is about 374.5162615941.

The spelling of 52530561 in words is "fifty-two million, five hundred thirty thousand, five hundred sixty-one".