133477 has 4 divisors (see below), whose sum is σ = 134656. Its totient is φ = 132300.

The previous prime is 133451. The next prime is 133481. The reversal of 133477 is 774331.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 774331 = 401 ⋅1931.

It is a cyclic number.

It is not a de Polignac number, because 133477 - 2⁷ = 133349 is a prime.

It is a super-2 number, since 2×133477² = 35632219058, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

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, 399 + ... + 652.

It is an arithmetic number, because the mean of its divisors is an integer number (33664).

2¹³³⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

133477 is a deficient number, since it is larger than the sum of its proper divisors (1179).

133477 is a wasteful number, since it uses less digits than its factorization.

133477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178.

The product of its digits is 1764, while the sum is 25.

The square root of 133477 is about 365.3450423914. The cubic root of 133477 is about 51.1056377602.

The spelling of 133477 in words is "one hundred thirty-three thousand, four hundred seventy-seven".