52530257 has 4 divisors (see below), whose sum is σ = 56571060. Its totient is φ = 48489456.

The previous prime is 52530241. The next prime is 52530263. The reversal of 52530257 is 75203525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24641296 + 27888961 = 4964^2 + 5281^2 .

It is a cyclic number.

It is not a de Polignac number, because 52530257 - 2⁴ = 52530241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52530217) 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, 2020382 + ... + 2020407.

It is an arithmetic number, because the mean of its divisors is an integer number (14142765).

Almost surely, 2^52530257 is an apocalyptic number.

It is an amenable number.

52530257 is a deficient number, since it is larger than the sum of its proper divisors (4040803).

52530257 is a wasteful number, since it uses less digits than its factorization.

52530257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040802.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 52530257 is about 7247.7760037131. The cubic root of 52530257 is about 374.5155391374.

The spelling of 52530257 in words is "fifty-two million, five hundred thirty thousand, two hundred fifty-seven".