1455535553 has 4 divisors (see below), whose sum is σ = 1455633348. Its totient is φ = 1455437760.

The previous prime is 1455535541. The next prime is 1455535589. The reversal of 1455535553 is 3555355541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 529368064 + 926167489 = 23008^2 + 30433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455535553 - 2¹⁰ = 1455534529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1455535553.

It is not an unprimeable number, because it can be changed into a prime (1455535253) 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, 21428 + ... + 58053.

It is an arithmetic number, because the mean of its divisors is an integer number (363908337).

Almost surely, 2^1455535553 is an apocalyptic number.

It is an amenable number.

1455535553 is a deficient number, since it is larger than the sum of its proper divisors (97795).

1455535553 is an equidigital number, since it uses as much as digits as its factorization.

1455535553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97794.

The product of its digits is 562500, while the sum is 41.

The square root of 1455535553 is about 38151.4816619224. The cubic root of 1455535553 is about 1133.2896939271.

It can be divided in two parts, 1 and 455535553, that added together give a palindrome (455535554).

The spelling of 1455535553 in words is "one billion, four hundred fifty-five million, five hundred thirty-five thousand, five hundred fifty-three".