133150261 has 2 divisors, whose sum is σ = 133150262. Its totient is φ = 133150260.

The previous prime is 133150217. The next prime is 133150267. The reversal of 133150261 is 162051331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131102500 + 2047761 = 11450^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 133150261 - 2⁹ = 133149749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133150267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66575130 + 66575131.

It is an arithmetic number, because the mean of its divisors is an integer number (66575131).

Almost surely, 2^133150261 is an apocalyptic number.

It is an amenable number.

133150261 is a deficient number, since it is larger than the sum of its proper divisors (1).

133150261 is an equidigital number, since it uses as much as digits as its factorization.

133150261 is an odious number, because the sum of its binary digits is odd.

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

The square root of 133150261 is about 11539.0753962352. The cubic root of 133150261 is about 510.6390310741.

The spelling of 133150261 in words is "one hundred thirty-three million, one hundred fifty thousand, two hundred sixty-one".