133231552 has 28 divisors (see below), whose sum is σ = 272913856. Its totient is φ = 64465920.

The previous prime is 133231547. The next prime is 133231607. The reversal of 133231552 is 255132331.

It is a zygodrome in base 2.

It is a congruent 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, 31593 + ... + 35560.

Almost surely, 2^133231552 is an apocalyptic number.

It is an amenable number.

133231552 is an abundant number, since it is smaller than the sum of its proper divisors (139682304).

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

133231552 is an equidigital number, since it uses as much as digits as its factorization.

133231552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67196 (or 67186 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 133231552 is about 11542.5972813748. The cubic root of 133231552 is about 510.7429285115.

Adding to 133231552 its reverse (255132331), we get a palindrome (388363883).

The spelling of 133231552 in words is "one hundred thirty-three million, two hundred thirty-one thousand, five hundred fifty-two".