2154323455 has 24 divisors (see below), whose sum is σ = 2816498304. Its totient is φ = 1580040000.

The previous prime is 2154323449. The next prime is 2154323467. The reversal of 2154323455 is 5543234512.

It is not a de Polignac number, because 2154323455 - 2³ = 2154323447 is a prime.

It is a super-2 number, since 2×2154323455² = 9282219097526274050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154323455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36705 + ... + 75205.

It is an arithmetic number, because the mean of its divisors is an integer number (117354096).

Almost surely, 2^2154323455 is an apocalyptic number.

2154323455 is a deficient number, since it is larger than the sum of its proper divisors (662174849).

2154323455 is a wasteful number, since it uses less digits than its factorization.

2154323455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38575 (or 38556 counting only the distinct ones).

The product of its digits is 72000, while the sum is 34.

The square root of 2154323455 is about 46414.6900776037. The cubic root of 2154323455 is about 1291.5274367491.

Adding to 2154323455 its reverse (5543234512), we get a palindrome (7697557967).

The spelling of 2154323455 in words is "two billion, one hundred fifty-four million, three hundred twenty-three thousand, four hundred fifty-five".