2161350 has 48 divisors (see below), whose sum is σ = 5959440. Its totient is φ = 576000.

The previous prime is 2161349. The next prime is 2161373. The reversal of 2161350 is 531612.

2161350 is a `hidden beast` number, since 2 + 1 + 613 + 50 = 666.

2161350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (124155).

2^2161350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2979720).

2161350 is an abundant number, since it is smaller than the sum of its proper divisors (3798090).

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

2161350 is a wasteful number, since it uses less digits than its factorization.

2161350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2161350 is about 1470.1530532567. The cubic root of 2161350 is about 129.2930062270.

Adding to 2161350 its reverse (531612), we get a palindrome (2692962).

It can be divided in two parts, 216 and 1350, that multiplied together give a square (291600 = 540²).

The spelling of 2161350 in words is "two million, one hundred sixty-one thousand, three hundred fifty".