12949553 has 2 divisors, whose sum is σ = 12949554. Its totient is φ = 12949552.

The previous prime is 12949523. The next prime is 12949571. The reversal of 12949553 is 35594921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 47089 = 3592^2 + 217^2 .

It is an emirp because it is prime and its reverse (35594921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12949553 - 2¹⁶ = 12884017 is a prime.

It is not a weakly prime, because it can be changed into another prime (12949523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6474776 + 6474777.

It is an arithmetic number, because the mean of its divisors is an integer number (6474777).

Almost surely, 2^12949553 is an apocalyptic number.

It is an amenable number.

12949553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12949553 is an equidigital number, since it uses as much as digits as its factorization.

12949553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The square root of 12949553 is about 3598.5487352543. The cubic root of 12949553 is about 234.8289263458.

The spelling of 12949553 in words is "twelve million, nine hundred forty-nine thousand, five hundred fifty-three".