511461 has 16 divisors (see below), whose sum is σ = 798400. Its totient is φ = 322704.

The previous prime is 511457. The next prime is 511463. The reversal of 511461 is 164115.

It is not a de Polignac number, because 511461 - 2² = 511457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15 + ... + 1011.

It is an arithmetic number, because the mean of its divisors is an integer number (49900).

2⁵¹¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

511461 is a deficient number, since it is larger than the sum of its proper divisors (286939).

511461 is a wasteful number, since it uses less digits than its factorization.

511461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1019 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 511461 is about 715.1650159229. The cubic root of 511461 is about 79.9719172265.

Adding to 511461 its reverse (164115), we get a palindrome (675576).

The spelling of 511461 in words is "five hundred eleven thousand, four hundred sixty-one".