133620552 has 48 divisors (see below), whose sum is σ = 389729340. Its totient is φ = 41113728.

The previous prime is 133620551. The next prime is 133620581. The reversal of 133620552 is 255026331.

133620552 is a `hidden beast` number, since 1 + 33 + 620 + 5 + 5 + 2 = 666.

133620552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119377476 + 14243076 = 10926^2 + 3774^2 .

It is not an unprimeable number, because it can be changed into a prime (133620551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70443 + ... + 72314.

Almost surely, 2^133620552 is an apocalyptic number.

133620552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133620552 is an abundant number, since it is smaller than the sum of its proper divisors (256108788).

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

133620552 is a wasteful number, since it uses less digits than its factorization.

133620552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142782 (or 142775 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 133620552 is about 11559.4356263617. The cubic root of 133620552 is about 511.2395224647.

Adding to 133620552 its reverse (255026331), we get a palindrome (388646883).

The spelling of 133620552 in words is "one hundred thirty-three million, six hundred twenty thousand, five hundred fifty-two".