135066531 has 4 divisors (see below), whose sum is σ = 180088712. Its totient is φ = 90044352.

The previous prime is 135066509. The next prime is 135066541. The reversal of 135066531 is 135660531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135660531 = 3 ⋅45220177.

It is not a de Polignac number, because 135066531 - 2⁵ = 135066499 is a prime.

It is a super-2 number, since 2×135066531² = 36485935592747922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135066541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22511086 + ... + 22511091.

It is an arithmetic number, because the mean of its divisors is an integer number (45022178).

Almost surely, 2^135066531 is an apocalyptic number.

135066531 is a deficient number, since it is larger than the sum of its proper divisors (45022181).

135066531 is an equidigital number, since it uses as much as digits as its factorization.

135066531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45022180.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 135066531 is about 11621.8127243559. The cubic root of 135066531 is about 513.0770415778.

The spelling of 135066531 in words is "one hundred thirty-five million, sixty-six thousand, five hundred thirty-one".