511145441 has 4 divisors (see below), whose sum is σ = 511224000. Its totient is φ = 511066884.

The previous prime is 511145389. The next prime is 511145449. The reversal of 511145441 is 144541115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 511145441 - 2⁶ = 511145377 is a prime.

It is a super-2 number, since 2×511145441² = 522539323710168962, 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 511145441.

It is not an unprimeable number, because it can be changed into a prime (511145449) 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 3 ways as a sum of consecutive naturals, for example, 28541 + ... + 42858.

It is an arithmetic number, because the mean of its divisors is an integer number (127806000).

Almost surely, 2^511145441 is an apocalyptic number.

It is an amenable number.

511145441 is a deficient number, since it is larger than the sum of its proper divisors (78559).

511145441 is an equidigital number, since it uses as much as digits as its factorization.

511145441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78558.

The product of its digits is 1600, while the sum is 26.

The square root of 511145441 is about 22608.5258475647. The cubic root of 511145441 is about 799.5546693342.

Adding to 511145441 its reverse (144541115), we get a palindrome (655686556).

The spelling of 511145441 in words is "five hundred eleven million, one hundred forty-five thousand, four hundred forty-one".