52020245 has 4 divisors (see below), whose sum is σ = 62424300. Its totient is φ = 41616192.

The previous prime is 52020217. The next prime is 52020257. The reversal of 52020245 is 54202025.

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 8868484 + 43151761 = 2978^2 + 6569^2 .

It is a cyclic number.

It is not a de Polignac number, because 52020245 - 2¹² = 52016149 is a prime.

It is a super-2 number, since 2×52020245² = 5412211779720050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5202020 + ... + 5202029.

It is an arithmetic number, because the mean of its divisors is an integer number (15606075).

Almost surely, 2^52020245 is an apocalyptic number.

It is an amenable number.

52020245 is a deficient number, since it is larger than the sum of its proper divisors (10404055).

52020245 is a wasteful number, since it uses less digits than its factorization.

52020245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404054.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 52020245 is about 7212.5061525104. The cubic root of 52020245 is about 373.2995482997.

It can be divided in two parts, 52020 and 245, that multiplied together give a square (12744900 = 3570²).

The spelling of 52020245 in words is "fifty-two million, twenty thousand, two hundred forty-five".