652540540 has 12 divisors (see below), whose sum is σ = 1370335176. Its totient is φ = 261016208.

The previous prime is 652540507. The next prime is 652540561. The reversal of 652540540 is 45045256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16313494 + ... + 16313533.

It is an arithmetic number, because the mean of its divisors is an integer number (114194598).

Almost surely, 2^652540540 is an apocalyptic number.

It is an amenable number.

652540540 is an abundant number, since it is smaller than the sum of its proper divisors (717794636).

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

652540540 is a wasteful number, since it uses less digits than its factorization.

652540540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32627036 (or 32627034 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 652540540 is about 25544.8730668211. The cubic root of 652540540 is about 867.3662100201.

Adding to 652540540 its reverse (45045256), we get a palindrome (697585796).

The spelling of 652540540 in words is "six hundred fifty-two million, five hundred forty thousand, five hundred forty".