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BaseRepresentation
bin1000000101101101101011
310222201212002
420011231223
51020324210
6113241215
724011243
oct10055553
93881762
102120555
111219228
1286320b
13593288
143d2b23
152bd4a5
hex205b6b

2120555 has 8 divisors (see below), whose sum is σ = 2626944. Its totient is φ = 1641600.

The previous prime is 2120551. The next prime is 2120579. The reversal of 2120555 is 5550212.

2120555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120555 - 22 = 2120551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120551) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6686 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (328368).

22120555 is an apocalyptic number.

2120555 is a deficient number, since it is larger than the sum of its proper divisors (506389).

2120555 is a wasteful number, since it uses less digits than its factorization.

2120555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2120555 is about 1456.2125531666. The cubic root of 2120555 is about 128.4743750222.

Adding to 2120555 its reverse (5550212), we get a palindrome (7670767).

The spelling of 2120555 in words is "two million, one hundred twenty thousand, five hundred fifty-five".

Divisors: 1 5 31 155 13681 68405 424111 2120555