531526530 has 32 divisors (see below), whose sum is σ = 1276784064. Its totient is φ = 141615936.

The previous prime is 531526511. The next prime is 531526531. The reversal of 531526530 is 35625135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (531526531) 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 15 ways as a sum of consecutive naturals, for example, 29949 + ... + 44271.

It is an arithmetic number, because the mean of its divisors is an integer number (39899502).

Almost surely, 2^531526530 is an apocalyptic number.

531526530 is an abundant number, since it is smaller than the sum of its proper divisors (745257534).

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

531526530 is a wasteful number, since it uses less digits than its factorization.

531526530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 531526530 is about 23054.8591407538. The cubic root of 531526530 is about 810.0434514109.

The spelling of 531526530 in words is "five hundred thirty-one million, five hundred twenty-six thousand, five hundred thirty".