511916 has 6 divisors (see below), whose sum is σ = 895860. Its totient is φ = 255956.

The previous prime is 511909. The next prime is 511933. The reversal of 511916 is 619115.

It is a junction number, because it is equal to n+sod(n) for n = 511891 and 511900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63986 + ... + 63993.

It is an arithmetic number, because the mean of its divisors is an integer number (149310).

2⁵¹¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

511916 is a deficient number, since it is larger than the sum of its proper divisors (383944).

511916 is a wasteful number, since it uses less digits than its factorization.

511916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127983 (or 127981 counting only the distinct ones).

The product of its digits is 270, while the sum is 23.

The square root of 511916 is about 715.4830536078. The cubic root of 511916 is about 79.9956247607.

The spelling of 511916 in words is "five hundred eleven thousand, nine hundred sixteen".