655520313 has 16 divisors (see below), whose sum is σ = 999438336. Its totient is φ = 374376720.

The previous prime is 655520303. The next prime is 655520329. The reversal of 655520313 is 313025556.

It is not a de Polignac number, because 655520313 - 2⁴ = 655520297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655520303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35758 + ... + 50888.

It is an arithmetic number, because the mean of its divisors is an integer number (62464896).

Almost surely, 2^655520313 is an apocalyptic number.

It is an amenable number.

655520313 is a deficient number, since it is larger than the sum of its proper divisors (343918023).

655520313 is a wasteful number, since it uses less digits than its factorization.

655520313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17204.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 655520313 is about 25603.1309218228. The cubic root of 655520313 is about 868.6844577781.

Adding to 655520313 its reverse (313025556), we get a palindrome (968545869).

The spelling of 655520313 in words is "six hundred fifty-five million, five hundred twenty thousand, three hundred thirteen".