2155460405 has 16 divisors (see below), whose sum is σ = 3028161024. Its totient is φ = 1441979520.

The previous prime is 2155460389. The next prime is 2155460407. The reversal of 2155460405 is 5040645512.

2155460405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155460405 - 2⁴ = 2155460389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155460407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749597 + ... + 752466.

It is an arithmetic number, because the mean of its divisors is an integer number (189260064).

Almost surely, 2^2155460405 is an apocalyptic number.

It is an amenable number.

2155460405 is a deficient number, since it is larger than the sum of its proper divisors (872700619).

2155460405 is a wasteful number, since it uses less digits than its factorization.

2155460405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502116.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 2155460405 is about 46426.9362008737. The cubic root of 2155460405 is about 1291.7545991519.

The spelling of 2155460405 in words is "two billion, one hundred fifty-five million, four hundred sixty thousand, four hundred five".