61103611 has 2 divisors, whose sum is σ = 61103612. Its totient is φ = 61103610.

The previous prime is 61103597. The next prime is 61103621. The reversal of 61103611 is 11630116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61103611 - 2¹⁵ = 61070843 is a prime.

It is not a weakly prime, because it can be changed into another prime (61103621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30551805 + 30551806.

It is an arithmetic number, because the mean of its divisors is an integer number (30551806).

Almost surely, 2^61103611 is an apocalyptic number.

61103611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61103611 is an equidigital number, since it uses as much as digits as its factorization.

61103611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 61103611 is about 7816.8798762678. The cubic root of 61103611 is about 393.8724689673.

Adding to 61103611 its reverse (11630116), we get a palindrome (72733727).

The spelling of 61103611 in words is "sixty-one million, one hundred three thousand, six hundred eleven".