10521145 has 4 divisors (see below), whose sum is σ = 12625380. Its totient is φ = 8416912.

The previous prime is 10521107. The next prime is 10521149. The reversal of 10521145 is 54112501.

10521145 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3988009 + 6533136 = 1997^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 10521145 - 2¹¹ = 10519097 is a prime.

It is a super-2 number, since 2×10521145² = 221388984222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10521149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052110 + ... + 1052119.

It is an arithmetic number, because the mean of its divisors is an integer number (3156345).

Almost surely, 2^10521145 is an apocalyptic number.

It is an amenable number.

10521145 is a deficient number, since it is larger than the sum of its proper divisors (2104235).

10521145 is an equidigital number, since it uses as much as digits as its factorization.

10521145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104234.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 10521145 is about 3243.6314525544. The cubic root of 10521145 is about 219.1228503893.

Adding to 10521145 its reverse (54112501), we get a palindrome (64633646).

It can be divided in two parts, 1052 and 1145, that added together give a cube (2197 = 13³).

The spelling of 10521145 in words is "ten million, five hundred twenty-one thousand, one hundred forty-five".