10621145 has 4 divisors (see below), whose sum is σ = 12745380. Its totient is φ = 8496912.

The previous prime is 10621139. The next prime is 10621153. The reversal of 10621145 is 54112601.

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 3798601 + 6822544 = 1949^2 + 2612^2 .

It is a cyclic number.

It is not a de Polignac number, because 10621145 - 2⁸ = 10620889 is a prime.

It is a super-2 number, since 2×10621145² = 225617442222050, which contains 22 as substring.

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, 1062110 + ... + 1062119.

It is an arithmetic number, because the mean of its divisors is an integer number (3186345).

Almost surely, 2^10621145 is an apocalyptic number.

It is an amenable number.

10621145 is a deficient number, since it is larger than the sum of its proper divisors (2124235).

10621145 is an equidigital number, since it uses as much as digits as its factorization.

10621145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124234.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 10621145 is about 3259.0098189481. The cubic root of 10621145 is about 219.8148925040.

Adding to 10621145 its reverse (54112601), we get a palindrome (64733746).

The spelling of 10621145 in words is "ten million, six hundred twenty-one thousand, one hundred forty-five".