2154135155 has 8 divisors (see below), whose sum is σ = 2594098032. Its totient is φ = 1717217568.

The previous prime is 2154135133. The next prime is 2154135197. The reversal of 2154135155 is 5515314512.

2154135155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2154135155 - 2¹² = 2154131059 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, 759764 + ... + 762593.

It is an arithmetic number, because the mean of its divisors is an integer number (324262254).

Almost surely, 2^2154135155 is an apocalyptic number.

2154135155 is a deficient number, since it is larger than the sum of its proper divisors (439962877).

2154135155 is a wasteful number, since it uses less digits than its factorization.

2154135155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522645.

The product of its digits is 15000, while the sum is 32.

The square root of 2154135155 is about 46412.6615806506. The cubic root of 2154135155 is about 1291.4898067294.

Adding to 2154135155 its reverse (5515314512), we get a palindrome (7669449667).

The spelling of 2154135155 in words is "two billion, one hundred fifty-four million, one hundred thirty-five thousand, one hundred fifty-five".