12423551 has 8 divisors (see below), whose sum is σ = 14337024. Its totient is φ = 10544760.

The previous prime is 12423539. The next prime is 12423563. The reversal of 12423551 is 15532421.

It is an interprime number because it is at equal distance from previous prime (12423539) and next prime (12423563).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12423551 - 2⁶ = 12423487 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 (12423581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7895 + ... + 9336.

It is an arithmetic number, because the mean of its divisors is an integer number (1792128).

Almost surely, 2^12423551 is an apocalyptic number.

12423551 is a deficient number, since it is larger than the sum of its proper divisors (1913473).

12423551 is a wasteful number, since it uses less digits than its factorization.

12423551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17341.

The product of its digits is 1200, while the sum is 23.

The square root of 12423551 is about 3524.7058033260. The cubic root of 12423551 is about 231.6053474225.

Adding to 12423551 its reverse (15532421), we get a palindrome (27955972).

The spelling of 12423551 in words is "twelve million, four hundred twenty-three thousand, five hundred fifty-one".