12072551 has 8 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 11729592.

The previous prime is 12072517. The next prime is 12072553. The reversal of 12072551 is 15527021.

It is a happy number.

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 12072551 - 2¹⁴ = 12056167 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 (12072553) 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, 8960 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 2^12072551 is an apocalyptic number.

12072551 is a deficient number, since it is larger than the sum of its proper divisors (346009).

12072551 is a wasteful number, since it uses less digits than its factorization.

12072551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12072551 is about 3474.5576696898. The cubic root of 12072551 is about 229.4033115744.

Adding to 12072551 its reverse (15527021), we get a palindrome (27599572).

The spelling of 12072551 in words is "twelve million, seventy-two thousand, five hundred fifty-one".