105404549 has 2 divisors, whose sum is σ = 105404550. Its totient is φ = 105404548.

The previous prime is 105404543. The next prime is 105404623. The reversal of 105404549 is 945404501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61936900 + 43467649 = 7870^2 + 6593^2 .

It is a cyclic number.

It is not a de Polignac number, because 105404549 - 2⁸ = 105404293 is a prime.

It is a super-2 number, since 2×105404549² = 22220237899786802, which contains 22 as substring.

It is a Chen prime.

It is equal to p_6054593 and since 105404549 and 6054593 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105404543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52702274 + 52702275.

It is an arithmetic number, because the mean of its divisors is an integer number (52702275).

Almost surely, 2^105404549 is an apocalyptic number.

It is an amenable number.

105404549 is a deficient number, since it is larger than the sum of its proper divisors (1).

105404549 is an equidigital number, since it uses as much as digits as its factorization.

105404549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 105404549 is about 10266.6717586567. The cubic root of 105404549 is about 472.3745067658.

The spelling of 105404549 in words is "one hundred five million, four hundred four thousand, five hundred forty-nine".