12551145 has 16 divisors (see below), whose sum is σ = 20139840. Its totient is φ = 6674624.

The previous prime is 12551131. The next prime is 12551179. The reversal of 12551145 is 54115521.

It is a cyclic number.

It is not a de Polignac number, because 12551145 - 2⁷ = 12551017 is a prime.

It is a super-2 number, since 2×12551145² = 315062481622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5287 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (1258740).

Almost surely, 2^12551145 is an apocalyptic number.

12551145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12551145 is a deficient number, since it is larger than the sum of its proper divisors (7588695).

12551145 is a wasteful number, since it uses less digits than its factorization.

12551145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424.

The product of its digits is 1000, while the sum is 24.

The square root of 12551145 is about 3542.7595176642. The cubic root of 12551145 is about 232.3955363753.

Adding to 12551145 its reverse (54115521), we get a palindrome (66666666).

The spelling of 12551145 in words is "twelve million, five hundred fifty-one thousand, one hundred forty-five".