103689541 has 2 divisors, whose sum is σ = 103689542. Its totient is φ = 103689540.

The previous prime is 103689463. The next prime is 103689583. The reversal of 103689541 is 145986301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102941316 + 748225 = 10146^2 + 865^2 .

It is an emirp because it is prime and its reverse (145986301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103689541 - 2¹⁹ = 103165253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103689541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103689841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51844770 + 51844771.

It is an arithmetic number, because the mean of its divisors is an integer number (51844771).

Almost surely, 2^103689541 is an apocalyptic number.

It is an amenable number.

103689541 is a deficient number, since it is larger than the sum of its proper divisors (1).

103689541 is an equidigital number, since it uses as much as digits as its factorization.

103689541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 103689541 is about 10182.8061456555. The cubic root of 103689541 is about 469.7985268965.

The spelling of 103689541 in words is "one hundred three million, six hundred eighty-nine thousand, five hundred forty-one".