52051540 has 24 divisors (see below), whose sum is σ = 110148192. Its totient is φ = 20660640.

The previous prime is 52051523. The next prime is 52051567. The reversal of 52051540 is 4515025.

52051540 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 7 ways as a sum of consecutive naturals, for example, 7314 + ... + 12553.

It is an arithmetic number, because the mean of its divisors is an integer number (4589508).

Almost surely, 2^52051540 is an apocalyptic number.

It is an amenable number.

52051540 is an abundant number, since it is smaller than the sum of its proper divisors (58096652).

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

52051540 is a wasteful number, since it uses less digits than its factorization.

52051540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20007 (or 20005 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 52051540 is about 7214.6753218700. The cubic root of 52051540 is about 373.3743913886.

Adding to 52051540 its reverse (4515025), we get a palindrome (56566565).

The spelling of 52051540 in words is "fifty-two million, fifty-one thousand, five hundred forty".