133415 has 4 divisors (see below), whose sum is σ = 160104. Its totient is φ = 106728.

The previous prime is 133403. The next prime is 133417. The reversal of 133415 is 514331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514331 = 89 ⋅5779.

It is a cyclic number.

It is not a de Polignac number, because 133415 - 2⁶ = 133351 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 133393 and 133402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13337 + ... + 13346.

It is an arithmetic number, because the mean of its divisors is an integer number (40026).

2¹³³⁴¹⁵ is an apocalyptic number.

133415 is a deficient number, since it is larger than the sum of its proper divisors (26689).

133415 is an equidigital number, since it uses as much as digits as its factorization.

133415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26688.

The product of its digits is 180, while the sum is 17.

The square root of 133415 is about 365.2601812407. The cubic root of 133415 is about 51.0977236869.

Adding to 133415 its reverse (514331), we get a palindrome (647746).

The spelling of 133415 in words is "one hundred thirty-three thousand, four hundred fifteen".