103644581 has 2 divisors, whose sum is σ = 103644582. Its totient is φ = 103644580.

The previous prime is 103644559. The next prime is 103644599. The reversal of 103644581 is 185446301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103347556 + 297025 = 10166^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 103644581 - 2²² = 99450277 is a prime.

It is a super-2 number, since 2×103644581² = 21484398341331122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103644481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51822290 + 51822291.

It is an arithmetic number, because the mean of its divisors is an integer number (51822291).

Almost surely, 2^103644581 is an apocalyptic number.

It is an amenable number.

103644581 is a deficient number, since it is larger than the sum of its proper divisors (1).

103644581 is an equidigital number, since it uses as much as digits as its factorization.

103644581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 103644581 is about 10180.5982633635. The cubic root of 103644581 is about 469.7306152081.

The spelling of 103644581 in words is "one hundred three million, six hundred forty-four thousand, five hundred eighty-one".