515555652 has 72 divisors (see below), whose sum is σ = 1291084032. Its totient is φ = 160056000.

The previous prime is 515555647. The next prime is 515555653. The reversal of 515555652 is 256555515.

It is a self number, because there is not a number n which added to its sum of digits gives 515555652.

It is not an unprimeable number, because it can be changed into a prime (515555653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263277 + ... + 265227.

Almost surely, 2^515555652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515555652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645542016).

515555652 is an abundant number, since it is smaller than the sum of its proper divisors (775528380).

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

515555652 is a wasteful number, since it uses less digits than its factorization.

515555652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2036 counting only the distinct ones).

The product of its digits is 187500, while the sum is 39.

The square root of 515555652 is about 22705.8506116816. The cubic root of 515555652 is about 801.8476316200.

The spelling of 515555652 in words is "five hundred fifteen million, five hundred fifty-five thousand, six hundred fifty-two".