531057408 has 144 divisors (see below), whose sum is σ = 1627481856. Its totient is φ = 150589440.

The previous prime is 531057377. The next prime is 531057421. The reversal of 531057408 is 804750135.

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, 929763 + ... + 930333.

Almost surely, 2^531057408 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 531057408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813740928).

531057408 is an abundant number, since it is smaller than the sum of its proper divisors (1096424448).

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

531057408 is a wasteful number, since it uses less digits than its factorization.

531057408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 531057408 is about 23044.6828574402. The cubic root of 531057408 is about 809.8050681661.

The spelling of 531057408 in words is "five hundred thirty-one million, fifty-seven thousand, four hundred eight".