133566507 has 18 divisors (see below), whose sum is σ = 199366596. Its totient is φ = 86166360.

The previous prime is 133566493. The next prime is 133566509. The reversal of 133566507 is 705665331.

It is a happy number.

It is not a de Polignac number, because 133566507 - 2¹⁰ = 133565483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133566509) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 928 + ... + 16370.

It is an arithmetic number, because the mean of its divisors is an integer number (11075922).

Almost surely, 2^133566507 is an apocalyptic number.

133566507 is a deficient number, since it is larger than the sum of its proper divisors (65800089).

133566507 is a wasteful number, since it uses less digits than its factorization.

133566507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15511 (or 15477 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 133566507 is about 11557.0976892990. The cubic root of 133566507 is about 511.1705867969.

The spelling of 133566507 in words is "one hundred thirty-three million, five hundred sixty-six thousand, five hundred seven".