511655516 has 24 divisors (see below), whose sum is σ = 935220384. Its totient is φ = 244471040.

The previous prime is 511655513. The next prime is 511655531. The reversal of 511655516 is 615556115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511655513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129896 + ... + 133776.

It is an arithmetic number, because the mean of its divisors is an integer number (38967516).

Almost surely, 2^511655516 is an apocalyptic number.

It is an amenable number.

511655516 is a deficient number, since it is larger than the sum of its proper divisors (423564868).

511655516 is a wasteful number, since it uses less digits than its factorization.

511655516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341 (or 5339 counting only the distinct ones).

The product of its digits is 22500, while the sum is 35.

The square root of 511655516 is about 22619.8036242581. The cubic root of 511655516 is about 799.8205409961.

The spelling of 511655516 in words is "five hundred eleven million, six hundred fifty-five thousand, five hundred sixteen".