1355120553 has 16 divisors (see below), whose sum is σ = 1819612800. Its totient is φ = 897043200.

The previous prime is 1355120539. The next prime is 1355120579. The reversal of 1355120553 is 3550215531.

It is not a de Polignac number, because 1355120553 - 2²⁰ = 1354071977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1355120553.

It is not an unprimeable number, because it can be changed into a prime (1355120953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273028 + ... + 277946.

It is an arithmetic number, because the mean of its divisors is an integer number (113725800).

Almost surely, 2^1355120553 is an apocalyptic number.

It is an amenable number.

1355120553 is a deficient number, since it is larger than the sum of its proper divisors (464492247).

1355120553 is a wasteful number, since it uses less digits than its factorization.

1355120553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 1355120553 is about 36811.9620911464. The cubic root of 1355120553 is about 1106.6050405495.

The spelling of 1355120553 in words is "one billion, three hundred fifty-five million, one hundred twenty thousand, five hundred fifty-three".