100012545 has 12 divisors (see below), whose sum is σ = 173355156. Its totient is φ = 53340000.

The previous prime is 100012543. The next prime is 100012573. The reversal of 100012545 is 545210001.

It can be written as a sum of positive squares in 2 ways, for example, as 77316849 + 22695696 = 8793^2 + 4764^2 .

It is not a de Polignac number, because 100012545 - 2¹ = 100012543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100012543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111206 + ... + 1111295.

It is an arithmetic number, because the mean of its divisors is an integer number (14446263).

Almost surely, 2^100012545 is an apocalyptic number.

100012545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100012545 is a deficient number, since it is larger than the sum of its proper divisors (73342611).

100012545 is a wasteful number, since it uses less digits than its factorization.

100012545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222512 (or 2222509 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 100012545 is about 10000.6272303291. The cubic root of 100012545 is about 464.1782921270.

Adding to 100012545 its reverse (545210001), we get a palindrome (645222546).

The spelling of 100012545 in words is "one hundred million, twelve thousand, five hundred forty-five".