653123530 has 16 divisors (see below), whose sum is σ = 1175998824. Its totient is φ = 261165760.

The previous prime is 653123521. The next prime is 653123551. The reversal of 653123530 is 35321356.

It can be written as a sum of positive squares in 4 ways, for example, as 625150009 + 27973521 = 25003^2 + 5289^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29664 + ... + 46756.

Almost surely, 2^653123530 is an apocalyptic number.

653123530 is a deficient number, since it is larger than the sum of its proper divisors (522875294).

653123530 is a wasteful number, since it uses less digits than its factorization.

653123530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20921.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 653123530 is about 25556.2816152898. The cubic root of 653123530 is about 867.6244393461.

Adding to 653123530 its reverse (35321356), we get a palindrome (688444886).

The spelling of 653123530 in words is "six hundred fifty-three million, one hundred twenty-three thousand, five hundred thirty".