133661562 has 8 divisors (see below), whose sum is σ = 267323136. Its totient is φ = 44553852.

The previous prime is 133661519. The next prime is 133661573. The reversal of 133661562 is 265166331.

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

133661562 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11138458 + ... + 11138469.

It is an arithmetic number, because the mean of its divisors is an integer number (33415392).

Almost surely, 2^133661562 is an apocalyptic number.

133661562 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133661562 is a wasteful number, since it uses less digits than its factorization.

133661562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22276932.

The product of its digits is 19440, while the sum is 33.

The square root of 133661562 is about 11561.2093658060. The cubic root of 133661562 is about 511.2918192807.

The spelling of 133661562 in words is "one hundred thirty-three million, six hundred sixty-one thousand, five hundred sixty-two".