531538770 has 96 divisors (see below), whose sum is σ = 1491393600. Its totient is φ = 120887424.

The previous prime is 531538759. The next prime is 531538771. The reversal of 531538770 is 77835135.

It is a super-2 number, since 2×531538770² = 565066928026225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531538771) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 335841 + ... + 337419.

It is an arithmetic number, because the mean of its divisors is an integer number (15535350).

Almost surely, 2^531538770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531538770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745696800).

531538770 is an abundant number, since it is smaller than the sum of its proper divisors (959854830).

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

531538770 is a wasteful number, since it uses less digits than its factorization.

531538770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1825 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 531538770 is about 23055.1245930270. The cubic root of 531538770 is about 810.0496692603.

The spelling of 531538770 in words is "five hundred thirty-one million, five hundred thirty-eight thousand, seven hundred seventy".