12162551 has 4 divisors (see below), whose sum is σ = 12169752. Its totient is φ = 12155352.

The previous prime is 12162541. The next prime is 12162559. The reversal of 12162551 is 15526121.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12162551 - 2⁶ = 12162487 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 (12162559) 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, 461 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (3042438).

Almost surely, 2^12162551 is an apocalyptic number.

12162551 is a deficient number, since it is larger than the sum of its proper divisors (7201).

12162551 is an equidigital number, since it uses as much as digits as its factorization.

12162551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7200.

The product of its digits is 600, while the sum is 23.

The square root of 12162551 is about 3487.4849103616. The cubic root of 12162551 is about 229.9719625559.

Adding to 12162551 its reverse (15526121), we get a palindrome (27688672).

The spelling of 12162551 in words is "twelve million, one hundred sixty-two thousand, five hundred fifty-one".