103561849 has 2 divisors, whose sum is σ = 103561850. Its totient is φ = 103561848.

The previous prime is 103561831. The next prime is 103561879. The reversal of 103561849 is 948165301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55398249 + 48163600 = 7443^2 + 6940^2 .

It is a cyclic number.

It is not a de Polignac number, because 103561849 - 2¹³ = 103553657 is a prime.

It is a super-3 number, since 3×103561849³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103561879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51780924 + 51780925.

It is an arithmetic number, because the mean of its divisors is an integer number (51780925).

Almost surely, 2^103561849 is an apocalyptic number.

It is an amenable number.

103561849 is a deficient number, since it is larger than the sum of its proper divisors (1).

103561849 is an equidigital number, since it uses as much as digits as its factorization.

103561849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 103561849 is about 10176.5342332250. The cubic root of 103561849 is about 469.6055979049.

The spelling of 103561849 in words is "one hundred three million, five hundred sixty-one thousand, eight hundred forty-nine".