531400521827 has 16 divisors (see below), whose sum is σ = 626931830784. Its totient is φ = 440774676000.

The previous prime is 531400521749. The next prime is 531400521829. The reversal of 531400521827 is 728125004135.

It is a cyclic number.

It is not a de Polignac number, because 531400521827 - 2¹⁸ = 531400259683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531400521829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8314202 + ... + 8377872.

It is an arithmetic number, because the mean of its divisors is an integer number (39183239424).

Almost surely, 2^531400521827 is an apocalyptic number.

531400521827 is a deficient number, since it is larger than the sum of its proper divisors (95531308957).

531400521827 is a wasteful number, since it uses less digits than its factorization.

531400521827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102170.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 531400521827 in words is "five hundred thirty-one billion, four hundred million, five hundred twenty-one thousand, eight hundred twenty-seven".