511541121 has 32 divisors (see below), whose sum is σ = 868412160. Its totient is φ = 260515584.

The previous prime is 511541119. The next prime is 511541143. The reversal of 511541121 is 121145115.

It is not a de Polignac number, because 511541121 - 2¹ = 511541119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (511541171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24390 + ... + 40223.

It is an arithmetic number, because the mean of its divisors is an integer number (27137880).

Almost surely, 2^511541121 is an apocalyptic number.

It is an amenable number.

511541121 is a deficient number, since it is larger than the sum of its proper divisors (356871039).

511541121 is a wasteful number, since it uses less digits than its factorization.

511541121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64665.

The product of its digits is 200, while the sum is 21.

The square root of 511541121 is about 22617.2748358417. The cubic root of 511541121 is about 799.7609290843.

Adding to 511541121 its reverse (121145115), we get a palindrome (632686236).

The spelling of 511541121 in words is "five hundred eleven million, five hundred forty-one thousand, one hundred twenty-one".