133604461 has 4 divisors (see below), whose sum is σ = 134830300. Its totient is φ = 132378624.

The previous prime is 133604459. The next prime is 133604473. The reversal of 133604461 is 164406331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89965225 + 43639236 = 9485^2 + 6606^2 .

It is a cyclic number.

It is not a de Polignac number, because 133604461 - 2¹ = 133604459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133604431) 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, 612756 + ... + 612973.

It is an arithmetic number, because the mean of its divisors is an integer number (33707575).

Almost surely, 2^133604461 is an apocalyptic number.

It is an amenable number.

133604461 is a deficient number, since it is larger than the sum of its proper divisors (1225839).

133604461 is a wasteful number, since it uses less digits than its factorization.

133604461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225838.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 133604461 is about 11558.7395939177. The cubic root of 133604461 is about 511.2189999595.

The spelling of 133604461 in words is "one hundred thirty-three million, six hundred four thousand, four hundred sixty-one".