52210145 has 32 divisors (see below), whose sum is σ = 73428768. Its totient is φ = 35278848.

The previous prime is 52210139. The next prime is 52210163. The reversal of 52210145 is 54101225.

52210145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 2140369 + 50069776 = 1463^2 + 7076^2 .

It is a cyclic number.

It is not a de Polignac number, because 52210145 - 2⁴ = 52210129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40247 + ... + 41523.

It is an arithmetic number, because the mean of its divisors is an integer number (2294649).

Almost surely, 2^52210145 is an apocalyptic number.

It is an amenable number.

52210145 is a deficient number, since it is larger than the sum of its proper divisors (21218623).

52210145 is a wasteful number, since it uses less digits than its factorization.

52210145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 52210145 is about 7225.6587934942. The cubic root of 52210145 is about 373.7532402414.

The spelling of 52210145 in words is "fifty-two million, two hundred ten thousand, one hundred forty-five".