652543540 has 48 divisors (see below), whose sum is σ = 1520285760. Its totient is φ = 233262080.

The previous prime is 652543537. The next prime is 652543559. The reversal of 652543540 is 45345256.

It is a junction number, because it is equal to n+sod(n) for n = 652543496 and 652543505.

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, 12157 + ... + 38116.

It is an arithmetic number, because the mean of its divisors is an integer number (31672620).

Almost surely, 2^652543540 is an apocalyptic number.

It is an amenable number.

652543540 is an abundant number, since it is smaller than the sum of its proper divisors (867742220).

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

652543540 is a wasteful number, since it uses less digits than its factorization.

652543540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50352 (or 50350 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 652543540 is about 25544.9317869514. The cubic root of 652543540 is about 867.3675392323.

Adding to 652543540 its reverse (45345256), we get a palindrome (697888796).

The spelling of 652543540 in words is "six hundred fifty-two million, five hundred forty-three thousand, five hundred forty".