2154553453 has 6 divisors (see below), whose sum is σ = 2333037354. Its totient is φ = 1988818416.

The previous prime is 2154553439. The next prime is 2154553493. The reversal of 2154553453 is 3543554512.

It can be written as a sum of positive squares in 3 ways, for example, as 386884 + 2154166569 = 622^2 + 46413^2 .

It is not a de Polignac number, because 2154553453 - 2⁵ = 2154553421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154553493) 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, 6374250 + ... + 6374587.

It is an arithmetic number, because the mean of its divisors is an integer number (388839559).

Almost surely, 2^2154553453 is an apocalyptic number.

It is an amenable number.

2154553453 is a deficient number, since it is larger than the sum of its proper divisors (178483901).

2154553453 is a wasteful number, since it uses less digits than its factorization.

2154553453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12748863 (or 12748850 counting only the distinct ones).

The product of its digits is 180000, while the sum is 37.

The square root of 2154553453 is about 46417.1676537895. The cubic root of 2154553453 is about 1291.5733967551.

The spelling of 2154553453 in words is "two billion, one hundred fifty-four million, five hundred fifty-three thousand, four hundred fifty-three".