101275155 has 12 divisors (see below), whose sum is σ = 175543680. Its totient is φ = 54013392.

The previous prime is 101275129. The next prime is 101275159. The reversal of 101275155 is 551572101.

It is not a de Polignac number, because 101275155 - 2¹² = 101271059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101275159) 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 11 ways as a sum of consecutive naturals, for example, 1125235 + ... + 1125324.

It is an arithmetic number, because the mean of its divisors is an integer number (14628640).

Almost surely, 2^101275155 is an apocalyptic number.

101275155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101275155 is a deficient number, since it is larger than the sum of its proper divisors (74268525).

101275155 is a wasteful number, since it uses less digits than its factorization.

101275155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250570 (or 2250567 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 101275155 is about 10063.5557831216. Note that the first 3 decimals coincide. The cubic root of 101275155 is about 466.1234714297.

It can be divided in two parts, 1012 and 75155, that added together give a palindrome (76167).

The spelling of 101275155 in words is "one hundred one million, two hundred seventy-five thousand, one hundred fifty-five".