133544533 has 2 divisors, whose sum is σ = 133544534. Its totient is φ = 133544532.

The previous prime is 133544519. The next prime is 133544557. The reversal of 133544533 is 335445331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73667889 + 59876644 = 8583^2 + 7738^2 .

It is a cyclic number.

It is not a de Polignac number, because 133544533 - 2¹³ = 133536341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133544495 and 133544504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133544513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66772266 + 66772267.

It is an arithmetic number, because the mean of its divisors is an integer number (66772267).

Almost surely, 2^133544533 is an apocalyptic number.

It is an amenable number.

133544533 is a deficient number, since it is larger than the sum of its proper divisors (1).

133544533 is an equidigital number, since it uses as much as digits as its factorization.

133544533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 31.

The square root of 133544533 is about 11556.1469789891. The cubic root of 133544533 is about 511.1425531260.

Adding to 133544533 its reverse (335445331), we get a palindrome (468989864).

The spelling of 133544533 in words is "one hundred thirty-three million, five hundred forty-four thousand, five hundred thirty-three".