52509369 has 32 divisors (see below), whose sum is σ = 81446400. Its totient is φ = 29756160.

The previous prime is 52509329. The next prime is 52509371. The reversal of 52509369 is 96390525.

52509369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52509369 - 2⁷ = 52509241 is a prime.

It is a super-2 number, since 2×52509369² = 5514467665556322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52509329) 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 31 ways as a sum of consecutive naturals, for example, 51537 + ... + 52545.

It is an arithmetic number, because the mean of its divisors is an integer number (2545200).

Almost surely, 2^52509369 is an apocalyptic number.

It is an amenable number.

52509369 is a deficient number, since it is larger than the sum of its proper divisors (28937031).

52509369 is a wasteful number, since it uses less digits than its factorization.

52509369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 52509369 is about 7246.3348666757. The cubic root of 52509369 is about 374.4658920822.

The spelling of 52509369 in words is "fifty-two million, five hundred nine thousand, three hundred sixty-nine".