12549802 has 4 divisors (see below), whose sum is σ = 18824706. Its totient is φ = 6274900.

The previous prime is 12549787. The next prime is 12549809. The reversal of 12549802 is 20894521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20894521 = 1249 ⋅16729.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 25281 = 3539^2 + 159^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12549809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3137449 + ... + 3137452.

Almost surely, 2^12549802 is an apocalyptic number.

12549802 is a deficient number, since it is larger than the sum of its proper divisors (6274904).

12549802 is an equidigital number, since it uses as much as digits as its factorization.

12549802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274903.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 12549802 is about 3542.5699710803. The cubic root of 12549802 is about 232.3872471359.

The spelling of 12549802 in words is "twelve million, five hundred forty-nine thousand, eight hundred two".