2150100 has 54 divisors (see below), whose sum is σ = 6742190. Its totient is φ = 573120.

The previous prime is 2150039. The next prime is 2150101. The reversal of 2150100 is 10512.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 24336 + 2125764 = 156^2 + 1458^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 295 + ... + 2094.

2^2150100 is an apocalyptic number.

2150100 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 2150100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3371095).

2150100 is an abundant number, since it is smaller than the sum of its proper divisors (4592090).

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

2150100 is a wasteful number, since it uses less digits than its factorization.

2150100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 2150100 is about 1466.3219291820. The cubic root of 2150100 is about 129.0682890641.

Adding to 2150100 its reverse (10512), we get a palindrome (2160612).

The spelling of 2150100 in words is "two million, one hundred fifty thousand, one hundred".