531144894 has 32 divisors (see below), whose sum is σ = 1231151616. Its totient is φ = 149617440.

The previous prime is 531144883. The next prime is 531144907. The reversal of 531144894 is 498441135.

It is a super-2 number, since 2×531144894² = 564229796844542472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86077 + ... + 92040.

It is an arithmetic number, because the mean of its divisors is an integer number (38473488).

Almost surely, 2^531144894 is an apocalyptic number.

531144894 is an abundant number, since it is smaller than the sum of its proper divisors (700006722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531144894 is a wasteful number, since it uses less digits than its factorization.

531144894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178200.

The product of its digits is 69120, while the sum is 39.

The square root of 531144894 is about 23046.5809611751. The cubic root of 531144894 is about 809.8495346180.

It can be divided in two parts, 5311 and 44894, that added together give a palindrome (50205).

The spelling of 531144894 in words is "five hundred thirty-one million, one hundred forty-four thousand, eight hundred ninety-four".