133749061 has 2 divisors, whose sum is σ = 133749062. Its totient is φ = 133749060.

The previous prime is 133749017. The next prime is 133749079. The reversal of 133749061 is 160947331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130530625 + 3218436 = 11425^2 + 1794^2 .

It is an emirp because it is prime and its reverse (160947331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133749061 - 2¹¹ = 133747013 is a prime.

It is a super-2 number, since 2×133749061² = 35777622636763442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133749001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66874530 + 66874531.

It is an arithmetic number, because the mean of its divisors is an integer number (66874531).

Almost surely, 2^133749061 is an apocalyptic number.

It is an amenable number.

133749061 is a deficient number, since it is larger than the sum of its proper divisors (1).

133749061 is an equidigital number, since it uses as much as digits as its factorization.

133749061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 133749061 is about 11564.9929096390. The cubic root of 133749061 is about 511.4033640998.

The spelling of 133749061 in words is "one hundred thirty-three million, seven hundred forty-nine thousand, sixty-one".