13450553 has 4 divisors (see below), whose sum is σ = 14241780. Its totient is φ = 12659328.

The previous prime is 13450531. The next prime is 13450571. The reversal of 13450553 is 35505431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35505431 = 13 ⋅2731187.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 4528384 = 2987^2 + 2128^2 .

It is a cyclic number.

It is not a de Polignac number, because 13450553 - 2¹⁰ = 13449529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13450253) 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, 395588 + ... + 395621.

It is an arithmetic number, because the mean of its divisors is an integer number (3560445).

Almost surely, 2^13450553 is an apocalyptic number.

It is an amenable number.

13450553 is a deficient number, since it is larger than the sum of its proper divisors (791227).

13450553 is an equidigital number, since it uses as much as digits as its factorization.

13450553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791226.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 13450553 is about 3667.4995569189. The cubic root of 13450553 is about 237.8190902118.

Adding to 13450553 its reverse (35505431), we get a palindrome (48955984).

The spelling of 13450553 in words is "thirteen million, four hundred fifty thousand, five hundred fifty-three".