12450531 has 4 divisors (see below), whose sum is σ = 16600712. Its totient is φ = 8300352.

The previous prime is 12450523. The next prime is 12450539. The reversal of 12450531 is 13505421.

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

It is an interprime number because it is at equal distance from previous prime (12450523) and next prime (12450539).

It is not a de Polignac number, because 12450531 - 2³ = 12450523 is a prime.

It is a super-2 number, since 2×12450531² = 310031444363922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12450498 and 12450507.

It is not an unprimeable number, because it can be changed into a prime (12450539) 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 3 ways as a sum of consecutive naturals, for example, 2075086 + ... + 2075091.

It is an arithmetic number, because the mean of its divisors is an integer number (4150178).

Almost surely, 2^12450531 is an apocalyptic number.

12450531 is a deficient number, since it is larger than the sum of its proper divisors (4150181).

12450531 is an equidigital number, since it uses as much as digits as its factorization.

12450531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150180.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12450531 is about 3528.5309974549. The cubic root of 12450531 is about 231.7728839108.

Adding to 12450531 its reverse (13505421), we get a palindrome (25955952).

The spelling of 12450531 in words is "twelve million, four hundred fifty thousand, five hundred thirty-one".