2359561 has 2 divisors, whose sum is σ = 2359562. Its totient is φ = 2359560.

The previous prime is 2359559. The next prime is 2359603. The reversal of 2359561 is 1659532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 109561 = 1500^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2359561 - 2¹ = 2359559 is a prime.

It is a super-2 number, since 2×2359561² = 11135056225442, which contains 22 as substring.

Together with 2359559, it forms a pair of twin primes.

It is an Ulam number.

2359561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2359061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1179780 + 1179781.

It is an arithmetic number, because the mean of its divisors is an integer number (1179781).

2^2359561 is an apocalyptic number.

It is an amenable number.

2359561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2359561 is an equidigital number, since it uses as much as digits as its factorization.

2359561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 2359561 is about 1536.0862605987. The cubic root of 2359561 is about 133.1303487752.

The spelling of 2359561 in words is "two million, three hundred fifty-nine thousand, five hundred sixty-one".