10131545 has 4 divisors (see below), whose sum is σ = 12157860. Its totient is φ = 8105232.

The previous prime is 10131529. The next prime is 10131547. The reversal of 10131545 is 54513101.

10131545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54513101 = 17 ⋅3206653.

It can be written as a sum of positive squares in 2 ways, for example, as 7722841 + 2408704 = 2779^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 10131545 - 2⁴ = 10131529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10131547) 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 3 ways as a sum of consecutive naturals, for example, 1013150 + ... + 1013159.

It is an arithmetic number, because the mean of its divisors is an integer number (3039465).

Almost surely, 2^10131545 is an apocalyptic number.

It is an amenable number.

10131545 is a deficient number, since it is larger than the sum of its proper divisors (2026315).

10131545 is an equidigital number, since it uses as much as digits as its factorization.

10131545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026314.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 10131545 is about 3183.0087967205. The cubic root of 10131545 is about 216.3840404360.

Adding to 10131545 its reverse (54513101), we get a palindrome (64644646).

The spelling of 10131545 in words is "ten million, one hundred thirty-one thousand, five hundred forty-five".