133787887 has 2 divisors, whose sum is σ = 133787888. Its totient is φ = 133787886.

The previous prime is 133787861. The next prime is 133787939. The reversal of 133787887 is 788787331.

It is an a-pointer prime, because the next prime (133787939) can be obtained adding 133787887 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133787887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133787587) 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, 66893943 + 66893944.

It is an arithmetic number, because the mean of its divisors is an integer number (66893944).

Almost surely, 2^133787887 is an apocalyptic number.

133787887 is a deficient number, since it is larger than the sum of its proper divisors (1).

133787887 is an equidigital number, since it uses as much as digits as its factorization.

133787887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 52.

The square root of 133787887 is about 11566.6713880874. The cubic root of 133787887 is about 511.4528443874.

The spelling of 133787887 in words is "one hundred thirty-three million, seven hundred eighty-seven thousand, eight hundred eighty-seven".