13051553 has 4 divisors (see below), whose sum is σ = 13089300. Its totient is φ = 13013808.

The previous prime is 13051547. The next prime is 13051559. The reversal of 13051553 is 35515031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35515031 = 3881 ⋅9151.

It is an interprime number because it is at equal distance from previous prime (13051547) and next prime (13051559).

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 6436369 = 2572^2 + 2537^2 .

It is a cyclic number.

It is not a de Polignac number, because 13051553 - 2¹⁸ = 12789409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13051559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18350 + ... + 19047.

It is an arithmetic number, because the mean of its divisors is an integer number (3272325).

Almost surely, 2^13051553 is an apocalyptic number.

It is an amenable number.

13051553 is a deficient number, since it is larger than the sum of its proper divisors (37747).

13051553 is an equidigital number, since it uses as much as digits as its factorization.

13051553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37746.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 13051553 is about 3612.6933166268. The cubic root of 13051553 is about 235.4438751160.

Adding to 13051553 its reverse (35515031), we get a palindrome (48566584).

The spelling of 13051553 in words is "thirteen million, fifty-one thousand, five hundred fifty-three".