2100445587 has 24 divisors (see below), whose sum is σ = 3175252080. Its totient is φ = 1387432800.

The previous prime is 2100445561. The next prime is 2100445603. The reversal of 2100445587 is 7855440012.

It is not a de Polignac number, because 2100445587 - 2¹⁵ = 2100412819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100446587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13164 + ... + 66137.

It is an arithmetic number, because the mean of its divisors is an integer number (132302170).

Almost surely, 2^2100445587 is an apocalyptic number.

2100445587 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2100445587 is a deficient number, since it is larger than the sum of its proper divisors (1074806493).

2100445587 is an equidigital number, since it uses as much as digits as its factorization.

2100445587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79425 (or 79413 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 2100445587 is about 45830.6184444417. The cubic root of 2100445587 is about 1280.6697315073.

Adding to 2100445587 its reverse (7855440012), we get a palindrome (9955885599).

The spelling of 2100445587 in words is "two billion, one hundred million, four hundred forty-five thousand, five hundred eighty-seven".