2120550 has 48 divisors (see below), whose sum is σ = 5362752. Its totient is φ = 554400.

The previous prime is 2120549. The next prime is 2120551. The reversal of 2120550 is 550212.

It is an interprime number because it is at equal distance from previous prime (2120549) and next prime (2120551).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120551) 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, 9945 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (111724).

2^2120550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2681376).

2120550 is an abundant number, since it is smaller than the sum of its proper divisors (3242202).

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

2120550 is a wasteful number, since it uses less digits than its factorization.

2120550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 288 counting only the distinct ones).

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

The square root of 2120550 is about 1456.2108363832. The cubic root of 2120550 is about 128.4742740467.

Adding to 2120550 its reverse (550212), we get a palindrome (2670762).

The spelling of 2120550 in words is "two million, one hundred twenty thousand, five hundred fifty".