2155905153 has 40 divisors (see below), whose sum is σ = 3339527400. Its totient is φ = 1384411392.

The previous prime is 2155905119. The next prime is 2155905179. The reversal of 2155905153 is 3515095512.

2155905153 is a `hidden beast` number, since 2 + 1 + 55 + 90 + 515 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 169598529 + 1986306624 = 13023^2 + 44568^2 .

It is not a de Polignac number, because 2155905153 - 2¹⁷ = 2155774081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155905853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1335775 + ... + 1337387.

It is an arithmetic number, because the mean of its divisors is an integer number (83488185).

Almost surely, 2^2155905153 is an apocalyptic number.

It is an amenable number.

2155905153 is a deficient number, since it is larger than the sum of its proper divisors (1183622247).

2155905153 is a wasteful number, since it uses less digits than its factorization.

2155905153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 2214 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 2155905153 is about 46431.7257163677. The cubic root of 2155905153 is about 1291.8434379856.

The spelling of 2155905153 in words is "two billion, one hundred fifty-five million, nine hundred five thousand, one hundred fifty-three".