52021245 has 32 divisors (see below), whose sum is σ = 85888512. Its totient is φ = 26872832.

The previous prime is 52021219. The next prime is 52021247. The reversal of 52021245 is 54212025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52021245 - 2⁶ = 52021181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79339 + ... + 79991.

It is an arithmetic number, because the mean of its divisors is an integer number (2684016).

Almost surely, 2^52021245 is an apocalyptic number.

It is an amenable number.

52021245 is a deficient number, since it is larger than the sum of its proper divisors (33867267).

52021245 is a wasteful number, since it uses less digits than its factorization.

52021245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52021245 is about 7212.5754762082. The cubic root of 52021245 is about 373.3019402989.

The spelling of 52021245 in words is "fifty-two million, twenty-one thousand, two hundred forty-five".