133097649 has 4 divisors (see below), whose sum is σ = 177463536. Its totient is φ = 88731764.

The previous prime is 133097647. The next prime is 133097659. The reversal of 133097649 is 946790331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133097649 - 2¹ = 133097647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133097649.

It is not an unprimeable number, because it can be changed into a prime (133097647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22182939 + ... + 22182944.

It is an arithmetic number, because the mean of its divisors is an integer number (44365884).

Almost surely, 2^133097649 is an apocalyptic number.

It is an amenable number.

133097649 is a deficient number, since it is larger than the sum of its proper divisors (44365887).

133097649 is an equidigital number, since it uses as much as digits as its factorization.

133097649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44365886.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 133097649 is about 11536.7954389423. The cubic root of 133097649 is about 510.5717655157.

The spelling of 133097649 in words is "one hundred thirty-three million, ninety-seven thousand, six hundred forty-nine".