133525530 has 32 divisors (see below), whose sum is σ = 356068800. Its totient is φ = 35606736.

The previous prime is 133525519. The next prime is 133525571. The reversal of 133525530 is 35525331.

133525530 is a `hidden beast` number, since 133 + 525 + 5 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 133525494 and 133525503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247000 + ... + 247539.

It is an arithmetic number, because the mean of its divisors is an integer number (11127150).

Almost surely, 2^133525530 is an apocalyptic number.

133525530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133525530 is an abundant number, since it is smaller than the sum of its proper divisors (222543270).

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

133525530 is a wasteful number, since it uses less digits than its factorization.

133525530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494555 (or 494549 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 133525530 is about 11555.3247466266. The cubic root of 133525530 is about 511.1183072746.

The spelling of 133525530 in words is "one hundred thirty-three million, five hundred twenty-five thousand, five hundred thirty".