133501679 has 2 divisors, whose sum is σ = 133501680. Its totient is φ = 133501678.

The previous prime is 133501673. The next prime is 133501681. The reversal of 133501679 is 976105331.

It is a strong prime.

It is an emirp because it is prime and its reverse (976105331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133501679 is a prime.

Together with 133501681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133501673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66750839 + 66750840.

It is an arithmetic number, because the mean of its divisors is an integer number (66750840).

Almost surely, 2^133501679 is an apocalyptic number.

133501679 is a deficient number, since it is larger than the sum of its proper divisors (1).

133501679 is an equidigital number, since it uses as much as digits as its factorization.

133501679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 133501679 is about 11554.2926654988. The cubic root of 133501679 is about 511.0878726237.

The spelling of 133501679 in words is "one hundred thirty-three million, five hundred one thousand, six hundred seventy-nine".