133581652 has 12 divisors (see below), whose sum is σ = 237257440. Its totient is φ = 65793816.

The previous prime is 133581619. The next prime is 133581659. The reversal of 133581652 is 256185331.

133581652 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133581659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248952 + ... + 249487.

Almost surely, 2^133581652 is an apocalyptic number.

It is an amenable number.

133581652 is a deficient number, since it is larger than the sum of its proper divisors (103675788).

133581652 is a wasteful number, since it uses less digits than its factorization.

133581652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498510 (or 498508 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 133581652 is about 11557.7528957839. The cubic root of 133581652 is about 511.1899064754.

The spelling of 133581652 in words is "one hundred thirty-three million, five hundred eighty-one thousand, six hundred fifty-two".