53052561 has 24 divisors (see below), whose sum is σ = 79109160. Its totient is φ = 34235136.

The previous prime is 53052539. The next prime is 53052607. The reversal of 53052561 is 16525035.

53052561 is a `hidden beast` number, since 53 + 0 + 52 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9492561 + 43560000 = 3081^2 + 6600^2 .

It is not a de Polignac number, because 53052561 - 2¹¹ = 53050513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53052061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103975 + ... + 104483.

It is an arithmetic number, because the mean of its divisors is an integer number (3296215).

Almost surely, 2^53052561 is an apocalyptic number.

It is an amenable number.

53052561 is a deficient number, since it is larger than the sum of its proper divisors (26056599).

53052561 is a wasteful number, since it uses less digits than its factorization.

53052561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 862 counting only the distinct ones).

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

The square root of 53052561 is about 7283.7188990240. The cubic root of 53052561 is about 375.7527068090.

Adding to 53052561 its reverse (16525035), we get a palindrome (69577596).

The spelling of 53052561 in words is "fifty-three million, fifty-two thousand, five hundred sixty-one".