12662551 has 4 divisors (see below), whose sum is σ = 13813704. Its totient is φ = 11511400.

The previous prime is 12662549. The next prime is 12662567. The reversal of 12662551 is 15526621.

12662551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12662551 - 2¹ = 12662549 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 (12662651) 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, 575560 + ... + 575581.

It is an arithmetic number, because the mean of its divisors is an integer number (3453426).

Almost surely, 2^12662551 is an apocalyptic number.

12662551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12662551 is a deficient number, since it is larger than the sum of its proper divisors (1151153).

12662551 is a wasteful number, since it uses less digits than its factorization.

12662551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151152.

The product of its digits is 3600, while the sum is 28.

The square root of 12662551 is about 3558.4478357846. The cubic root of 12662551 is about 233.0811054503.

The spelling of 12662551 in words is "twelve million, six hundred sixty-two thousand, five hundred fifty-one".