13630553 has 2 divisors, whose sum is σ = 13630554. Its totient is φ = 13630552.

The previous prime is 13630469. The next prime is 13630579. The reversal of 13630553 is 35503631.

It is an a-pointer prime, because the next prime (13630579) can be obtained adding 13630553 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13520329 + 110224 = 3677^2 + 332^2 .

It is an emirp because it is prime and its reverse (35503631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13630553 - 2¹⁶ = 13565017 is a prime.

It is not a weakly prime, because it can be changed into another prime (13630453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6815276 + 6815277.

It is an arithmetic number, because the mean of its divisors is an integer number (6815277).

Almost surely, 2^13630553 is an apocalyptic number.

It is an amenable number.

13630553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13630553 is an equidigital number, since it uses as much as digits as its factorization.

13630553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 13630553 is about 3691.9578816666. The cubic root of 13630553 is about 238.8752522072.

The spelling of 13630553 in words is "thirteen million, six hundred thirty thousand, five hundred fifty-three".