105285861 has 12 divisors (see below), whose sum is σ = 152275500. Its totient is φ = 70100160.

The previous prime is 105285857. The next prime is 105285871. The reversal of 105285861 is 168582501.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 52272900 = 7281^2 + 7230^2 .

It is not a de Polignac number, because 105285861 - 2² = 105285857 is a prime.

It is a super-2 number, since 2×105285861² = 22170225053022642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105285841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265 + ... + 14513.

It is an arithmetic number, because the mean of its divisors is an integer number (12689625).

Almost surely, 2^105285861 is an apocalyptic number.

It is an amenable number.

105285861 is a deficient number, since it is larger than the sum of its proper divisors (46989639).

105285861 is a wasteful number, since it uses less digits than its factorization.

105285861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15076 (or 15073 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 105285861 is about 10260.8898736903. The cubic root of 105285861 is about 472.1971385759.

The spelling of 105285861 in words is "one hundred five million, two hundred eighty-five thousand, eight hundred sixty-one".