52521278 has 16 divisors (see below), whose sum is σ = 82638144. Its totient is φ = 25005600.

The previous prime is 52521277. The next prime is 52521311. The reversal of 52521278 is 87212525.

It is a happy number.

52521278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52521277) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4073 + ... + 11028.

It is an arithmetic number, because the mean of its divisors is an integer number (5164884).

Almost surely, 2^52521278 is an apocalyptic number.

52521278 is a deficient number, since it is larger than the sum of its proper divisors (30116866).

52521278 is a wasteful number, since it uses less digits than its factorization.

52521278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15187.

The product of its digits is 11200, while the sum is 32.

The square root of 52521278 is about 7247.1565458461. The cubic root of 52521278 is about 374.4941992669.

The spelling of 52521278 in words is "fifty-two million, five hundred twenty-one thousand, two hundred seventy-eight".