12160557 has 8 divisors (see below), whose sum is σ = 18015680. Its totient is φ = 8107020.

The previous prime is 12160553. The next prime is 12160571. The reversal of 12160557 is 75506121.

12160557 is a `hidden beast` number, since 1 + 2 + 1 + 605 + 57 = 666.

It is not a de Polignac number, because 12160557 - 2² = 12160553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 450391 = 12160557 / (1 + 2 + 1 + 6 + 0 + 5 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12160557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225169 + ... + 225222.

It is an arithmetic number, because the mean of its divisors is an integer number (2251960).

Almost surely, 2^12160557 is an apocalyptic number.

It is an amenable number.

12160557 is a deficient number, since it is larger than the sum of its proper divisors (5855123).

12160557 is an equidigital number, since it uses as much as digits as its factorization.

12160557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450400 (or 450394 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 12160557 is about 3487.1990192703. The cubic root of 12160557 is about 229.9593942179.

Adding to 12160557 its reverse (75506121), we get a palindrome (87666678).

The spelling of 12160557 in words is "twelve million, one hundred sixty thousand, five hundred fifty-seven".