10512181 has 16 divisors (see below), whose sum is σ = 11395440. Its totient is φ = 9676800.

The previous prime is 10512169. The next prime is 10512209. The reversal of 10512181 is 18121501.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2480625 + 8031556 = 1575^2 + 2834^2 .

It is a 6-Lehmer number, since φ(10512181) divides (10512181-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 10512181 - 2¹³ = 10503989 is a prime.

It is a super-2 number, since 2×10512181² = 221011898753522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10512121) 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 15 ways as a sum of consecutive naturals, for example, 104031 + ... + 104131.

It is an arithmetic number, because the mean of its divisors is an integer number (712215).

Almost surely, 2^10512181 is an apocalyptic number.

It is an amenable number.

10512181 is a deficient number, since it is larger than the sum of its proper divisors (883259).

10512181 is a wasteful number, since it uses less digits than its factorization.

10512181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 10512181 is about 3242.2493735060. The cubic root of 10512181 is about 219.0606019258.

Adding to 10512181 its reverse (18121501), we get a palindrome (28633682).

The spelling of 10512181 in words is "ten million, five hundred twelve thousand, one hundred eighty-one".