133669057 has 2 divisors, whose sum is σ = 133669058. Its totient is φ = 133669056.

The previous prime is 133669051. The next prime is 133669103. The reversal of 133669057 is 750966331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129072321 + 4596736 = 11361^2 + 2144^2 .

It is an emirp because it is prime and its reverse (750966331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133669057 is a prime.

It is not a weakly prime, because it can be changed into another prime (133669051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66834528 + 66834529.

It is an arithmetic number, because the mean of its divisors is an integer number (66834529).

Almost surely, 2^133669057 is an apocalyptic number.

It is an amenable number.

133669057 is a deficient number, since it is larger than the sum of its proper divisors (1).

133669057 is an equidigital number, since it uses as much as digits as its factorization.

133669057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 133669057 is about 11561.5335055519. The cubic root of 133669057 is about 511.3013759064.

The spelling of 133669057 in words is "one hundred thirty-three million, six hundred sixty-nine thousand, fifty-seven".