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156241 is a prime number
BaseRepresentation
bin100110001001010001
321221022201
4212021101
514444431
63203201
71220341
oct461121
9257281
10156241
11a7428
1276501
1356167
1440d21
1531461
hex26251

156241 has 2 divisors, whose sum is σ = 156242. Its totient is φ = 156240.

The previous prime is 156229. The next prime is 156253. The reversal of 156241 is 142651.

Adding to 156241 its reverse (142651), we get a palindrome (298892).

It can be divided in two parts, 15624 and 1, that added together give a 6-th power (15625 = 56).

156241 = 2792 + 2802.

It is a balanced prime because it is at equal distance from previous prime (156229) and next prime (156253).

It can be written as a sum of positive squares in only one way, i.e., 78400 + 77841 = 280^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 156241 - 217 = 25169 is a prime.

It is a super-2 number, since 2×1562412 = 48822500162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78120 + 78121.

It is an arithmetic number, because the mean of its divisors is an integer number (78121).

156241 is a Friedman number, since it can be written as (5^(6+1)-4)*2-1, using all its digits and the basic arithmetic operations.

2156241 is an apocalyptic number.

156241 is the 280-th centered square number.

It is an amenable number.

156241 is a deficient number, since it is larger than the sum of its proper divisors (1).

156241 is an equidigital number, since it uses as much as digits as its factorization.

156241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 156241 is about 395.2733231575. The cubic root of 156241 is about 53.8598331023.

The spelling of 156241 in words is "one hundred fifty-six thousand, two hundred forty-one".