2155463560 has 16 divisors (see below), whose sum is σ = 4849793100. Its totient is φ = 862185408.

The previous prime is 2155463551. The next prime is 2155463591. The reversal of 2155463560 is 653645512.

It can be written as a sum of positive squares in 2 ways, for example, as 2032386724 + 123076836 = 45082^2 + 11094^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26943255 + ... + 26943334.

Almost surely, 2^2155463560 is an apocalyptic number.

2155463560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155463560 is an abundant number, since it is smaller than the sum of its proper divisors (2694329540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155463560 is a wasteful number, since it uses less digits than its factorization.

2155463560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53886600 (or 53886596 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 2155463560 is about 46426.9701789811. The cubic root of 2155463560 is about 1291.7552294091.

The spelling of 2155463560 in words is "two billion, one hundred fifty-five million, four hundred sixty-three thousand, five hundred sixty".