133393154 has 4 divisors (see below), whose sum is σ = 200089734. Its totient is φ = 66696576.

The previous prime is 133393151. The next prime is 133393171. The reversal of 133393154 is 451393331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451393331 = 23 ⋅19625797.

It can be written as a sum of positive squares in only one way, i.e., 118222129 + 15171025 = 10873^2 + 3895^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133393154.

It is not an unprimeable number, because it can be changed into a prime (133393151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33348287 + ... + 33348290.

Almost surely, 2^133393154 is an apocalyptic number.

133393154 is a deficient number, since it is larger than the sum of its proper divisors (66696580).

133393154 is an equidigital number, since it uses as much as digits as its factorization.

133393154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66696579.

The product of its digits is 14580, while the sum is 32.

The square root of 133393154 is about 11549.5954041689. The cubic root of 133393154 is about 510.9493454077.

The spelling of 133393154 in words is "one hundred thirty-three million, three hundred ninety-three thousand, one hundred fifty-four".