511894 has 4 divisors (see below), whose sum is σ = 767844. Its totient is φ = 255946.

The previous prime is 511891. The next prime is 511897. The reversal of 511894 is 498115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498115 = 5 ⋅99623.

It is an interprime number because it is at equal distance from previous prime (511891) and next prime (511897).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511891) 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 as a sum of consecutive naturals, namely, 127972 + ... + 127975.

It is an arithmetic number, because the mean of its divisors is an integer number (191961).

2⁵¹¹⁸⁹⁴ is an apocalyptic number.

511894 is a deficient number, since it is larger than the sum of its proper divisors (255950).

511894 is a wasteful number, since it uses less digits than its factorization.

511894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255949.

The product of its digits is 1440, while the sum is 28.

The square root of 511894 is about 715.4676792141. The cubic root of 511894 is about 79.9944787856.

The spelling of 511894 in words is "five hundred eleven thousand, eight hundred ninety-four".