2155463558 has 16 divisors (see below), whose sum is σ = 3450345984. Its totient is φ = 1006346880.

The previous prime is 2155463551. The next prime is 2155463591. The reversal of 2155463558 is 8553645512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155463551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245273 + ... + 253908.

It is an arithmetic number, because the mean of its divisors is an integer number (215646624).

Almost surely, 2^2155463558 is an apocalyptic number.

2155463558 is a deficient number, since it is larger than the sum of its proper divisors (1294882426).

2155463558 is a wasteful number, since it uses less digits than its factorization.

2155463558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499327.

The product of its digits is 720000, while the sum is 44.

The square root of 2155463558 is about 46426.9701574419. The cubic root of 2155463558 is about 1291.7552290096.

The spelling of 2155463558 in words is "two billion, one hundred fifty-five million, four hundred sixty-three thousand, five hundred fifty-eight".