133012549 has 2 divisors, whose sum is σ = 133012550. Its totient is φ = 133012548.

The previous prime is 133012541. The next prime is 133012571. The reversal of 133012549 is 945210331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110145025 + 22867524 = 10495^2 + 4782^2 .

It is a cyclic number.

It is not a de Polignac number, because 133012549 - 2³ = 133012541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133012541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66506274 + 66506275.

It is an arithmetic number, because the mean of its divisors is an integer number (66506275).

Almost surely, 2^133012549 is an apocalyptic number.

It is an amenable number.

133012549 is a deficient number, since it is larger than the sum of its proper divisors (1).

133012549 is an equidigital number, since it uses as much as digits as its factorization.

133012549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 133012549 is about 11533.1066499881. The cubic root of 133012549 is about 510.4629258251.

The spelling of 133012549 in words is "one hundred thirty-three million, twelve thousand, five hundred forty-nine".