511555996 has 24 divisors (see below), whose sum is σ = 1027972736. Its totient is φ = 218196720.

The previous prime is 511555991. The next prime is 511555997. The reversal of 511555996 is 699555115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511555991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37386 + ... + 49201.

Almost surely, 2^511555996 is an apocalyptic number.

It is an amenable number.

511555996 is an abundant number, since it is smaller than the sum of its proper divisors (516416740).

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

511555996 is a wasteful number, since it uses less digits than its factorization.

511555996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86809 (or 86807 counting only the distinct ones).

The product of its digits is 303750, while the sum is 46.

The square root of 511555996 is about 22617.6036750138. The cubic root of 511555996 is about 799.7686810375.

The spelling of 511555996 in words is "five hundred eleven million, five hundred fifty-five thousand, nine hundred ninety-six".