13275531 has 24 divisors (see below), whose sum is σ = 20367360. Its totient is φ = 8314416.

The previous prime is 13275527. The next prime is 13275539. The reversal of 13275531 is 13557231.

It is not a de Polignac number, because 13275531 - 2² = 13275527 is a prime.

It is a super-2 number, since 2×13275531² = 352479446663922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13275495 and 13275504.

It is not an unprimeable number, because it can be changed into a prime (13275539) 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 23 ways as a sum of consecutive naturals, for example, 11670 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (848640).

Almost surely, 2^13275531 is an apocalyptic number.

13275531 is a deficient number, since it is larger than the sum of its proper divisors (7091829).

13275531 is a wasteful number, since it uses less digits than its factorization.

13275531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1172 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 13275531 is about 3643.5602094655. The cubic root of 13275531 is about 236.7830627172.

It can be divided in two parts, 13275 and 531, that multiplied together give a square (7049025 = 2655²).

The spelling of 13275531 in words is "thirteen million, two hundred seventy-five thousand, five hundred thirty-one".