2154133547 has 8 divisors (see below), whose sum is σ = 2216978544. Its totient is φ = 2091868128.

The previous prime is 2154133511. The next prime is 2154133571. The reversal of 2154133547 is 7453314512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2154133547 - 2¹⁰ = 2154132523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154103547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137348 + ... + 152225.

It is an arithmetic number, because the mean of its divisors is an integer number (277122318).

Almost surely, 2^2154133547 is an apocalyptic number.

2154133547 is a deficient number, since it is larger than the sum of its proper divisors (62844997).

2154133547 is a wasteful number, since it uses less digits than its factorization.

2154133547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289789.

The product of its digits is 50400, while the sum is 35.

The square root of 2154133547 is about 46412.6442577882. The cubic root of 2154133547 is about 1291.4894853760.

The spelling of 2154133547 in words is "two billion, one hundred fifty-four million, one hundred thirty-three thousand, five hundred forty-seven".