133806451 has 2 divisors, whose sum is σ = 133806452. Its totient is φ = 133806450.

The previous prime is 133806443. The next prime is 133806461. The reversal of 133806451 is 154608331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133806451 - 2³ = 133806443 is a prime.

It is not a weakly prime, because it can be changed into another prime (133806461) 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, 66903225 + 66903226.

It is an arithmetic number, because the mean of its divisors is an integer number (66903226).

Almost surely, 2^133806451 is an apocalyptic number.

133806451 is a deficient number, since it is larger than the sum of its proper divisors (1).

133806451 is an equidigital number, since it uses as much as digits as its factorization.

133806451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 133806451 is about 11567.4738383106. The cubic root of 133806451 is about 511.4764991733.

The spelling of 133806451 in words is "one hundred thirty-three million, eight hundred six thousand, four hundred fifty-one".