511001 has 2 divisors, whose sum is σ = 511002. Its totient is φ = 511000.

The previous prime is 510989. The next prime is 511013. The reversal of 511001 is 100115.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (510989) and next prime (511013).

It can be written as a sum of positive squares in only one way, i.e., 491401 + 19600 = 701^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 511001 - 2¹⁴ = 494617 is a prime.

It is a super-2 number, since 2×511001² = 522244044002, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 511001.

It is not a weakly prime, because it can be changed into another prime (511061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255500 + 255501.

It is an arithmetic number, because the mean of its divisors is an integer number (255501).

2⁵¹¹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

511001 is a deficient number, since it is larger than the sum of its proper divisors (1).

511001 is an equidigital number, since it uses as much as digits as its factorization.

511001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 511001 is about 714.8433394808. The cubic root of 511001 is about 79.9479348726.

Adding to 511001 its reverse (100115), we get a palindrome (611116).

The spelling of 511001 in words is "five hundred eleven thousand, one".