133527531 has 8 divisors (see below), whose sum is σ = 178178560. Its totient is φ = 88947432.

The previous prime is 133527523. The next prime is 133527551. The reversal of 133527531 is 135725331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133527531 - 2³ = 133527523 is a prime.

It is a super-2 number, since 2×133527531² = 35659203069911922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133527521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13171 + ... + 20988.

It is an arithmetic number, because the mean of its divisors is an integer number (22272320).

Almost surely, 2^133527531 is an apocalyptic number.

133527531 is a deficient number, since it is larger than the sum of its proper divisors (44651029).

133527531 is a wasteful number, since it uses less digits than its factorization.

133527531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35465.

The product of its digits is 9450, while the sum is 30.

The square root of 133527531 is about 11555.4113297623. The cubic root of 133527531 is about 511.1208604508.

The spelling of 133527531 in words is "one hundred thirty-three million, five hundred twenty-seven thousand, five hundred thirty-one".