652240520 has 48 divisors (see below), whose sum is σ = 1481802660. Its totient is φ = 258384896.

The previous prime is 652240481. The next prime is 652240529. The reversal of 652240520 is 25042256.

It is a Cunningham number, because it is equal to 25539²-1.

It can be written as a sum of positive squares in 6 ways, for example, as 13060996 + 639179524 = 3614^2 + 25282^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 652240520.

It is not an unprimeable number, because it can be changed into a prime (652240529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510122 + ... + 511398.

Almost surely, 2^652240520 is an apocalyptic number.

It is an amenable number.

652240520 is an abundant number, since it is smaller than the sum of its proper divisors (829562140).

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

652240520 is a wasteful number, since it uses less digits than its factorization.

652240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 652240520 is about 25538.9999804221. Note that the first 4 decimals coincide. The cubic root of 652240520 is about 867.2332593520.

Adding to 652240520 its reverse (25042256), we get a palindrome (677282776).

The spelling of 652240520 in words is "six hundred fifty-two million, two hundred forty thousand, five hundred twenty".