133997552 has 40 divisors (see below), whose sum is σ = 280294560. Its totient is φ = 61689600.

The previous prime is 133997537. The next prime is 133997569. The reversal of 133997552 is 255799331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145349 + ... + 146267.

It is an arithmetic number, because the mean of its divisors is an integer number (7007364).

Almost surely, 2^133997552 is an apocalyptic number.

It is an amenable number.

133997552 is an abundant number, since it is smaller than the sum of its proper divisors (146297008).

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

133997552 is a wasteful number, since it uses less digits than its factorization.

133997552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1635 counting only the distinct ones).

The product of its digits is 255150, while the sum is 44.

The square root of 133997552 is about 11575.7311648120. The cubic root of 133997552 is about 511.7198785083.

The spelling of 133997552 in words is "one hundred thirty-three million, nine hundred ninety-seven thousand, five hundred fifty-two".