133428851 has 2 divisors, whose sum is σ = 133428852. Its totient is φ = 133428850.

The previous prime is 133428847. The next prime is 133428863. The reversal of 133428851 is 158824331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133428851 - 2² = 133428847 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133128851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66714425 + 66714426.

It is an arithmetic number, because the mean of its divisors is an integer number (66714426).

Almost surely, 2^133428851 is an apocalyptic number.

133428851 is a deficient number, since it is larger than the sum of its proper divisors (1).

133428851 is an equidigital number, since it uses as much as digits as its factorization.

133428851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 133428851 is about 11551.1406796039. The cubic root of 133428851 is about 510.9949192908.

The spelling of 133428851 in words is "one hundred thirty-three million, four hundred twenty-eight thousand, eight hundred fifty-one".