531477144 has 96 divisors (see below), whose sum is σ = 1621002240. Its totient is φ = 155851200.

The previous prime is 531477127. The next prime is 531477151. The reversal of 531477144 is 441774135.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 531477099 and 531477108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13729 + ... + 35375.

It is an arithmetic number, because the mean of its divisors is an integer number (16885440).

Almost surely, 2^531477144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531477144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810501120).

531477144 is an abundant number, since it is smaller than the sum of its proper divisors (1089525096).

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

531477144 is a wasteful number, since it uses less digits than its factorization.

531477144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21701 (or 21694 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 531477144 is about 23053.7880618349. The cubic root of 531477144 is about 810.0183626381.

The spelling of 531477144 in words is "five hundred thirty-one million, four hundred seventy-seven thousand, one hundred forty-four".