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2121377 is a prime number
BaseRepresentation
bin1000000101111010100001
310222202222112
420011322201
51020341002
6113245105
724013526
oct10057241
93882875
102121377
111219905
12863795
1359376b
143d314d
152bd852
hex205ea1

2121377 has 2 divisors, whose sum is σ = 2121378. Its totient is φ = 2121376.

The previous prime is 2121373. The next prime is 2121389. The reversal of 2121377 is 7731212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 678976 = 1201^2 + 824^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121377 - 22 = 2121373 is a prime.

It is a super-2 number, since 2×21213772 = 9000480752258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 29 + 1 + 221 + 1 + 38 + 73 + 75 .

It is not a weakly prime, because it can be changed into another prime (2121373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060688 + 1060689.

It is an arithmetic number, because the mean of its divisors is an integer number (1060689).

22121377 is an apocalyptic number.

It is an amenable number.

2121377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121377 is an equidigital number, since it uses as much as digits as its factorization.

2121377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 23.

The square root of 2121377 is about 1456.4947648378. The cubic root of 2121377 is about 128.4909732388.

Adding to 2121377 its reverse (7731212), we get a palindrome (9852589).

The spelling of 2121377 in words is "two million, one hundred twenty-one thousand, three hundred seventy-seven".