2215500 has 96 divisors (see below), whose sum is σ = 7408128. Its totient is φ = 504000.

The previous prime is 2215487. The next prime is 2215501. The reversal of 2215500 is 55122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2215500.

It is not an unprimeable number, because it can be changed into a prime (2215501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10395 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (77168).

2^2215500 is an apocalyptic number.

2215500 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 2215500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3704064).

2215500 is an abundant number, since it is smaller than the sum of its proper divisors (5192628).

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

2215500 is a wasteful number, since it uses less digits than its factorization.

2215500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2215500 is about 1488.4555754204. The cubic root of 2215500 is about 130.3638720847.

2215500 divided by its product of nonzero digits (100) gives a triangular number (22155 = T₂₁₀).

The spelling of 2215500 in words is "two million, two hundred fifteen thousand, five hundred".