10505145 has 16 divisors (see below), whose sum is σ = 19209600. Its totient is φ = 4802304.

The previous prime is 10505141. The next prime is 10505179. The reversal of 10505145 is 54150501.

It is not a de Polignac number, because 10505145 - 2² = 10505141 is a prime.

It is a super-2 number, since 2×10505145² = 220716142942050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10505141) 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, 49920 + ... + 50129.

It is an arithmetic number, because the mean of its divisors is an integer number (1200600).

Almost surely, 2^10505145 is an apocalyptic number.

10505145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10505145 is a deficient number, since it is larger than the sum of its proper divisors (8704455).

10505145 is a wasteful number, since it uses less digits than its factorization.

10505145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100064.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 10505145 is about 3241.1641427117. The cubic root of 10505145 is about 219.0117172272.

Adding to 10505145 its reverse (54150501), we get a palindrome (64655646).

The spelling of 10505145 in words is "ten million, five hundred five thousand, one hundred forty-five".