10500155 has 4 divisors (see below), whose sum is σ = 12600192. Its totient is φ = 8400120.

The previous prime is 10500143. The next prime is 10500157. The reversal of 10500155 is 55100501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55100501 = 43 ⋅1281407.

It is not a de Polignac number, because 10500155 - 2⁸ = 10499899 is a prime.

It is a super-2 number, since 2×10500155² = 220506510048050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10500157) 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, 1050011 + ... + 1050020.

It is an arithmetic number, because the mean of its divisors is an integer number (3150048).

Almost surely, 2^10500155 is an apocalyptic number.

10500155 is a deficient number, since it is larger than the sum of its proper divisors (2100037).

10500155 is an equidigital number, since it uses as much as digits as its factorization.

10500155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100036.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 10500155 is about 3240.3942661349. The cubic root of 10500155 is about 218.9770344898.

Adding to 10500155 its reverse (55100501), we get a palindrome (65600656).

The spelling of 10500155 in words is "ten million, five hundred thousand, one hundred fifty-five".