12451541 has 4 divisors (see below), whose sum is σ = 12459084. Its totient is φ = 12444000.

The previous prime is 12451529. The next prime is 12451561. The reversal of 12451541 is 14515421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14515421 = 109 ⋅133169.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 12103441 = 590^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 12451541 - 2⁶ = 12451477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12451561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110 + ... + 4991.

It is an arithmetic number, because the mean of its divisors is an integer number (3114771).

Almost surely, 2^12451541 is an apocalyptic number.

It is an amenable number.

12451541 is a deficient number, since it is larger than the sum of its proper divisors (7543).

12451541 is an equidigital number, since it uses as much as digits as its factorization.

12451541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542.

The product of its digits is 800, while the sum is 23.

The square root of 12451541 is about 3528.6741136013. The cubic root of 12451541 is about 231.7791509603.

Adding to 12451541 its reverse (14515421), we get a palindrome (26966962).

It can be divided in two parts, 1 and 2451541, that added together give a palindrome (2451542).

The spelling of 12451541 in words is "twelve million, four hundred fifty-one thousand, five hundred forty-one".