16000531 has 4 divisors (see below), whose sum is σ = 16027000. Its totient is φ = 15974064.

The previous prime is 16000511. The next prime is 16000573. The reversal of 16000531 is 13500061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16000531 - 2⁵ = 16000499 is a prime.

It is a super-2 number, since 2×16000531² = 512033984563922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16000511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12306 + ... + 13543.

It is an arithmetic number, because the mean of its divisors is an integer number (4006750).

Almost surely, 2^16000531 is an apocalyptic number.

16000531 is a deficient number, since it is larger than the sum of its proper divisors (26469).

16000531 is an equidigital number, since it uses as much as digits as its factorization.

16000531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26468.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 16000531 is about 4000.0663744493. The cubic root of 16000531 is about 251.9869975235.

Adding to 16000531 its reverse (13500061), we get a palindrome (29500592).

The spelling of 16000531 in words is "sixteen million, five hundred thirty-one", and thus it is an aban number.