12550749 has 4 divisors (see below), whose sum is σ = 16734336. Its totient is φ = 8367164.

The previous prime is 12550729. The next prime is 12550751. The reversal of 12550749 is 94705521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12550749 - 2¹³ = 12542557 is a prime.

It is a super-2 number, since 2×12550749² = 315042600922002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550729) 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, 2091789 + ... + 2091794.

It is an arithmetic number, because the mean of its divisors is an integer number (4183584).

Almost surely, 2^12550749 is an apocalyptic number.

It is an amenable number.

12550749 is a deficient number, since it is larger than the sum of its proper divisors (4183587).

12550749 is an equidigital number, since it uses as much as digits as its factorization.

12550749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183586.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 12550749 is about 3542.7036285865. The cubic root of 12550749 is about 232.3930922530.

The spelling of 12550749 in words is "twelve million, five hundred fifty thousand, seven hundred forty-nine".