105102545 has 4 divisors (see below), whose sum is σ = 126123060. Its totient is φ = 84082032.

The previous prime is 105102511. The next prime is 105102559. The reversal of 105102545 is 545201501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73753744 + 31348801 = 8588^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 105102545 - 2⁸ = 105102289 is a prime.

It is a super-2 number, since 2×105102545² = 22093089930954050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 105102545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510250 + ... + 10510259.

It is an arithmetic number, because the mean of its divisors is an integer number (31530765).

Almost surely, 2^105102545 is an apocalyptic number.

It is an amenable number.

105102545 is a deficient number, since it is larger than the sum of its proper divisors (21020515).

105102545 is an equidigital number, since it uses as much as digits as its factorization.

105102545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21020514.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105102545 is about 10251.9532285316. The cubic root of 105102545 is about 471.9229277226.

The spelling of 105102545 in words is "one hundred five million, one hundred two thousand, five hundred forty-five".