133512061 has 8 divisors (see below), whose sum is σ = 135402680. Its totient is φ = 131632128.

The previous prime is 133512047. The next prime is 133512077. The reversal of 133512061 is 160215331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109561 + 133402500 = 331^2 + 11550^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 133512061 - 2⁷ = 133511933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133512011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24385 + ... + 29353.

It is an arithmetic number, because the mean of its divisors is an integer number (16925335).

Almost surely, 2^133512061 is an apocalyptic number.

It is an amenable number.

133512061 is a deficient number, since it is larger than the sum of its proper divisors (1890619).

133512061 is an equidigital number, since it uses as much as digits as its factorization.

133512061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 133512061 is about 11554.7419270185. The cubic root of 133512061 is about 511.1011208385.

Adding to 133512061 its reverse (160215331), we get a palindrome (293727392).

The spelling of 133512061 in words is "one hundred thirty-three million, five hundred twelve thousand, sixty-one".