133886497 has 2 divisors, whose sum is σ = 133886498. Its totient is φ = 133886496.

The previous prime is 133886491. The next prime is 133886513. The reversal of 133886497 is 794688331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122080401 + 11806096 = 11049^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 133886497 - 2¹⁹ = 133362209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133886497.

It is not a weakly prime, because it can be changed into another prime (133886491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66943248 + 66943249.

It is an arithmetic number, because the mean of its divisors is an integer number (66943249).

Almost surely, 2^133886497 is an apocalyptic number.

It is an amenable number.

133886497 is a deficient number, since it is larger than the sum of its proper divisors (1).

133886497 is an equidigital number, since it uses as much as digits as its factorization.

133886497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 133886497 is about 11570.9332812872. The cubic root of 133886497 is about 511.5784710543.

The spelling of 133886497 in words is "one hundred thirty-three million, eight hundred eighty-six thousand, four hundred ninety-seven".