133330553 has 2 divisors, whose sum is σ = 133330554. Its totient is φ = 133330552.

The previous prime is 133330537. The next prime is 133330583. The reversal of 133330553 is 355033331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88868329 + 44462224 = 9427^2 + 6668^2 .

It is an emirp because it is prime and its reverse (355033331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133330553 - 2⁴ = 133330537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133330583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66665276 + 66665277.

It is an arithmetic number, because the mean of its divisors is an integer number (66665277).

Almost surely, 2^133330553 is an apocalyptic number.

It is an amenable number.

133330553 is a deficient number, since it is larger than the sum of its proper divisors (1).

133330553 is an equidigital number, since it uses as much as digits as its factorization.

133330553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 26.

The square root of 133330553 is about 11546.8849912000. The cubic root of 133330553 is about 510.8694039116.

Adding to 133330553 its reverse (355033331), we get a palindrome (488363884).

The spelling of 133330553 in words is "one hundred thirty-three million, three hundred thirty thousand, five hundred fifty-three".