515605489 has 32 divisors (see below), whose sum is σ = 643808000. Its totient is φ = 411505920.

The previous prime is 515605487. The next prime is 515605511. The reversal of 515605489 is 984506515.

It is not a de Polignac number, because 515605489 - 2¹ = 515605487 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515605487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396889 + ... + 398185.

It is an arithmetic number, because the mean of its divisors is an integer number (20119000).

Almost surely, 2^515605489 is an apocalyptic number.

It is an amenable number.

515605489 is a deficient number, since it is larger than the sum of its proper divisors (128202511).

515605489 is a wasteful number, since it uses less digits than its factorization.

515605489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 515605489 is about 22706.9480335865. The cubic root of 515605489 is about 801.8734680761.

The spelling of 515605489 in words is "five hundred fifteen million, six hundred five thousand, four hundred eighty-nine".