5453556121 has 4 divisors (see below), whose sum is σ = 5873060452. Its totient is φ = 5034051792.

The previous prime is 5453556103. The next prime is 5453556131. The reversal of 5453556121 is 1216553545.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2974611600 + 2478944521 = 54540^2 + 49789^2 .

It is a cyclic number.

It is not a de Polignac number, because 5453556121 - 2⁹ = 5453555609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5453556131) 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, 209752146 + ... + 209752171.

It is an arithmetic number, because the mean of its divisors is an integer number (1468265113).

Almost surely, 2^5453556121 is an apocalyptic number.

It is an amenable number.

5453556121 is a deficient number, since it is larger than the sum of its proper divisors (419504331).

5453556121 is a wasteful number, since it uses less digits than its factorization.

5453556121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419504330.

The product of its digits is 90000, while the sum is 37.

The square root of 5453556121 is about 73848.1964640979. The cubic root of 5453556121 is about 1760.1915383185.

The spelling of 5453556121 in words is "five billion, four hundred fifty-three million, five hundred fifty-six thousand, one hundred twenty-one".