511166881 has 9 divisors (see below), whose sum is σ = 534901969. Its totient is φ = 488444836.

The previous prime is 511166867. The next prime is 511166917. The reversal of 511166881 is 188661115.

The square root of 511166881 is 22609.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 511166881 - 2⁵ = 511166849 is a prime.

It is a super-2 number, since 2×511166881² = 522583160462536322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511166881.

It is not an unprimeable number, because it can be changed into a prime (511166281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 519516 + ... + 520498.

Almost surely, 2^511166881 is an apocalyptic number.

511166881 is the 22609-th square number.

511166881 is the 11305-th centered octagonal number.

It is an amenable number.

511166881 is a deficient number, since it is larger than the sum of its proper divisors (23735088).

511166881 is an frugal number, since it uses more digits than its factorization.

511166881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1006 counting only the distinct ones).

The product of its digits is 11520, while the sum is 37.

The cubic root of 511166881 is about 799.5658482872.

The spelling of 511166881 in words is "five hundred eleven million, one hundred sixty-six thousand, eight hundred eighty-one".