512881481 has 18 divisors (see below), whose sum is σ = 601858782. Its totient is φ = 435778560.

The previous prime is 512881463. The next prime is 512881489. The reversal of 512881481 is 184188215.

It can be written as a sum of positive squares in 3 ways, for example, as 22657600 + 490223881 = 4760^2 + 22141^2 .

It is not a de Polignac number, because 512881481 - 2¹⁸ = 512619337 is a prime.

It is a super-2 number, since 2×512881481² = 526094827105506722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512881489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1825061 + ... + 1825341.

It is an arithmetic number, because the mean of its divisors is an integer number (33436599).

Almost surely, 2^512881481 is an apocalyptic number.

It is an amenable number.

512881481 is a deficient number, since it is larger than the sum of its proper divisors (88977301).

512881481 is an equidigital number, since it uses as much as digits as its factorization.

512881481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 481 counting only the distinct ones).

The product of its digits is 20480, while the sum is 38.

The square root of 512881481 is about 22646.8867838385. The cubic root of 512881481 is about 800.4588414678.

The spelling of 512881481 in words is "five hundred twelve million, eight hundred eighty-one thousand, four hundred eighty-one".