511081673 has 4 divisors (see below), whose sum is σ = 511132308. Its totient is φ = 511031040.

The previous prime is 511081667. The next prime is 511081679. The reversal of 511081673 is 376180115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (511081667) and next prime (511081679).

It can be written as a sum of positive squares in 2 ways, for example, as 375894544 + 135187129 = 19388^2 + 11627^2 .

It is a cyclic number.

It is not a de Polignac number, because 511081673 - 2⁶ = 511081609 is a prime.

It is a super-2 number, since 2×511081673² = 522408952952957858, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (511081679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4436 + ... + 32277.

It is an arithmetic number, because the mean of its divisors is an integer number (127783077).

Almost surely, 2^511081673 is an apocalyptic number.

It is an amenable number.

511081673 is a deficient number, since it is larger than the sum of its proper divisors (50635).

511081673 is a wasteful number, since it uses less digits than its factorization.

511081673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50634.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 511081673 is about 22607.1155391394. The cubic root of 511081673 is about 799.5214184442.

The spelling of 511081673 in words is "five hundred eleven million, eighty-one thousand, six hundred seventy-three".