2155410540 has 192 divisors, whose sum is σ = 7089600000. Its totient is φ = 542142720.

The previous prime is 2155410533. The next prime is 2155410557. The reversal of 2155410540 is 450145512.

2155410540 is a `hidden beast` number, since 2 + 1 + 554 + 105 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4319211 + ... + 4319709.

It is an arithmetic number, because the mean of its divisors is an integer number (36925000).

Almost surely, 2^2155410540 is an apocalyptic number.

2155410540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155410540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3544800000).

2155410540 is an abundant number, since it is smaller than the sum of its proper divisors (4934189460).

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

2155410540 is a wasteful number, since it uses less digits than its factorization.

2155410540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2155410540 is about 46426.3991711612. The cubic root of 2155410540 is about 1291.7446378091.

The spelling of 2155410540 in words is "two billion, one hundred fifty-five million, four hundred ten thousand, five hundred forty".