103663541 has 2 divisors, whose sum is σ = 103663542. Its totient is φ = 103663540.

The previous prime is 103663537. The next prime is 103663561. The reversal of 103663541 is 145366301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102111025 + 1552516 = 10105^2 + 1246^2 .

It is an emirp because it is prime and its reverse (145366301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103663541 - 2² = 103663537 is a prime.

It is a super-2 number, since 2×103663541² = 21492259465317362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103663561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51831770 + 51831771.

It is an arithmetic number, because the mean of its divisors is an integer number (51831771).

Almost surely, 2^103663541 is an apocalyptic number.

It is an amenable number.

103663541 is a deficient number, since it is larger than the sum of its proper divisors (1).

103663541 is an equidigital number, since it uses as much as digits as its factorization.

103663541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 103663541 is about 10181.5294037782. The cubic root of 103663541 is about 469.7592565173.

The spelling of 103663541 in words is "one hundred three million, six hundred sixty-three thousand, five hundred forty-one".