13451553 has 6 divisors (see below), whose sum is σ = 19430034. Its totient is φ = 8967696.

The previous prime is 13451513. The next prime is 13451617. The reversal of 13451553 is 35515431.

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 898704 = 3543^2 + 948^2 .

It is not a de Polignac number, because 13451553 - 2¹⁸ = 13189409 is a prime.

It is a super-2 number, since 2×13451553² = 361888556223618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13451513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 747300 + ... + 747317.

It is an arithmetic number, because the mean of its divisors is an integer number (3238339).

Almost surely, 2^13451553 is an apocalyptic number.

It is an amenable number.

13451553 is a deficient number, since it is larger than the sum of its proper divisors (5978481).

13451553 is a wasteful number, since it uses less digits than its factorization.

13451553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494623 (or 1494620 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 13451553 is about 3667.6358870531. The cubic root of 13451553 is about 237.8249837290.

Adding to 13451553 its reverse (35515431), we get a palindrome (48966984).

The spelling of 13451553 in words is "thirteen million, four hundred fifty-one thousand, five hundred fifty-three".