52509390 has 32 divisors (see below), whose sum is σ = 126213120. Its totient is φ = 13981344.

The previous prime is 52509389. The next prime is 52509403. The reversal of 52509390 is 9390525.

52509390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 38907 + ... + 40233.

It is an arithmetic number, because the mean of its divisors is an integer number (3944160).

Almost surely, 2^52509390 is an apocalyptic number.

52509390 is an abundant number, since it is smaller than the sum of its proper divisors (73703730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52509390 is a wasteful number, since it uses less digits than its factorization.

52509390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 52509390 is about 7246.3363156839. The cubic root of 52509390 is about 374.4659420021.

The spelling of 52509390 in words is "fifty-two million, five hundred nine thousand, three hundred ninety".