2154543155 has 8 divisors (see below), whose sum is σ = 2597706384. Its totient is φ = 1715464800.

The previous prime is 2154543143. The next prime is 2154543163. The reversal of 2154543155 is 5513454512.

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

It is not a de Polignac number, because 2154543155 - 2⁶ = 2154543091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020056 + ... + 1022165.

It is an arithmetic number, because the mean of its divisors is an integer number (324713298).

Almost surely, 2^2154543155 is an apocalyptic number.

2154543155 is a deficient number, since it is larger than the sum of its proper divisors (443163229).

2154543155 is a wasteful number, since it uses less digits than its factorization.

2154543155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042437.

The product of its digits is 60000, while the sum is 35.

The square root of 2154543155 is about 46417.0567248722. The cubic root of 2154543155 is about 1291.5713389979.

Adding to 2154543155 its reverse (5513454512), we get a palindrome (7667997667).

The spelling of 2154543155 in words is "two billion, one hundred fifty-four million, five hundred forty-three thousand, one hundred fifty-five".