105561277 has 2 divisors, whose sum is σ = 105561278. Its totient is φ = 105561276.

The previous prime is 105561263. The next prime is 105561299. The reversal of 105561277 is 772165501.

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., 79459396 + 26101881 = 8914^2 + 5109^2 .

It is an emirp because it is prime and its reverse (772165501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105561277 - 2¹⁵ = 105528509 is a prime.

It is a super-2 number, since 2×105561277² = 22286366403741458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105561227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780638 + 52780639.

It is an arithmetic number, because the mean of its divisors is an integer number (52780639).

Almost surely, 2^105561277 is an apocalyptic number.

It is an amenable number.

105561277 is a deficient number, since it is larger than the sum of its proper divisors (1).

105561277 is an equidigital number, since it uses as much as digits as its factorization.

105561277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 105561277 is about 10274.3017767632. The cubic root of 105561277 is about 472.6085183221.

The spelling of 105561277 in words is "one hundred five million, five hundred sixty-one thousand, two hundred seventy-seven".