133125557 has 2 divisors, whose sum is σ = 133125558. Its totient is φ = 133125556.

The previous prime is 133125547. The next prime is 133125581. The reversal of 133125557 is 755521331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109641841 + 23483716 = 10471^2 + 4846^2 .

It is a cyclic number.

It is not a de Polignac number, because 133125557 - 2¹⁴ = 133109173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133125527) 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, 66562778 + 66562779.

It is an arithmetic number, because the mean of its divisors is an integer number (66562779).

Almost surely, 2^133125557 is an apocalyptic number.

It is an amenable number.

133125557 is a deficient number, since it is larger than the sum of its proper divisors (1).

133125557 is an equidigital number, since it uses as much as digits as its factorization.

133125557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 32.

The square root of 133125557 is about 11538.0048968615. The cubic root of 133125557 is about 510.6074486930.

Adding to 133125557 its reverse (755521331), we get a palindrome (888646888).

The spelling of 133125557 in words is "one hundred thirty-three million, one hundred twenty-five thousand, five hundred fifty-seven".