2141554500 has 144 divisors (see below), whose sum is σ = 6857690112. Its totient is φ = 562478400.

The previous prime is 2141554477. The next prime is 2141554507. The reversal of 2141554500 is 54551412.

2141554500 is a `hidden beast` number, since 2 + 1 + 4 + 155 + 4 + 500 = 666.

It is not an unprimeable number, because it can be changed into a prime (2141554507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 297949 + ... + 305051.

It is an arithmetic number, because the mean of its divisors is an integer number (47622848).

Almost surely, 2^2141554500 is an apocalyptic number.

2141554500 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 2141554500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3428845056).

2141554500 is an abundant number, since it is smaller than the sum of its proper divisors (4716135612).

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

2141554500 is a wasteful number, since it uses less digits than its factorization.

2141554500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195 (or 7180 counting only the distinct ones).

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

The square root of 2141554500 is about 46276.9326986999. The cubic root of 2141554500 is about 1288.9706950598.

The spelling of 2141554500 in words is "two billion, one hundred forty-one million, five hundred fifty-four thousand, five hundred".