133575061 has 2 divisors, whose sum is σ = 133575062. Its totient is φ = 133575060.

The previous prime is 133575059. The next prime is 133575109. The reversal of 133575061 is 160575331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 3478225 = 11406^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 133575061 - 2¹ = 133575059 is a prime.

Together with 133575059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133575011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66787530 + 66787531.

It is an arithmetic number, because the mean of its divisors is an integer number (66787531).

Almost surely, 2^133575061 is an apocalyptic number.

It is an amenable number.

133575061 is a deficient number, since it is larger than the sum of its proper divisors (1).

133575061 is an equidigital number, since it uses as much as digits as its factorization.

133575061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 133575061 is about 11557.4677589860. The cubic root of 133575061 is about 511.1814988635.

The spelling of 133575061 in words is "one hundred thirty-three million, five hundred seventy-five thousand, sixty-one".