52530145 has 4 divisors (see below), whose sum is σ = 63036180. Its totient is φ = 42024112.

The previous prime is 52530139. The next prime is 52530199. The reversal of 52530145 is 54103525.

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 39287824 + 13242321 = 6268^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 52530145 - 2¹¹ = 52528097 is a prime.

It is a super-2 number, since 2×52530145² = 5518832267442050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5253010 + ... + 5253019.

It is an arithmetic number, because the mean of its divisors is an integer number (15759045).

Almost surely, 2^52530145 is an apocalyptic number.

It is an amenable number.

52530145 is a deficient number, since it is larger than the sum of its proper divisors (10506035).

52530145 is a wasteful number, since it uses less digits than its factorization.

52530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10506034.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 52530145 is about 7247.7682772009. The cubic root of 52530145 is about 374.5152729684.

The spelling of 52530145 in words is "fifty-two million, five hundred thirty thousand, one hundred forty-five".