511442271 has 12 divisors (see below), whose sum is σ = 740469600. Its totient is φ = 340167840.

The previous prime is 511442257. The next prime is 511442273. The reversal of 511442271 is 172244115.

It is not a de Polignac number, because 511442271 - 2⁷ = 511442143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511442273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62046 + ... + 69803.

It is an arithmetic number, because the mean of its divisors is an integer number (61705800).

Almost surely, 2^511442271 is an apocalyptic number.

511442271 is a deficient number, since it is larger than the sum of its proper divisors (229027329).

511442271 is a wasteful number, since it uses less digits than its factorization.

511442271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132286 (or 132283 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 511442271 is about 22615.0894537254. The cubic root of 511442271 is about 799.7094106059.

Adding to 511442271 its reverse (172244115), we get a palindrome (683686386).

The spelling of 511442271 in words is "five hundred eleven million, four hundred forty-two thousand, two hundred seventy-one".