133534481 has 4 divisors (see below), whose sum is σ = 139340352. Its totient is φ = 127728612.

The previous prime is 133534477. The next prime is 133534501. The reversal of 133534481 is 184435331.

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: 184435331 = 29 ⋅6359839.

It is a cyclic number.

It is not a de Polignac number, because 133534481 - 2² = 133534477 is a prime.

It is a super-2 number, since 2×133534481² = 35662915231878722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133534421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2902901 + ... + 2902946.

It is an arithmetic number, because the mean of its divisors is an integer number (34835088).

Almost surely, 2^133534481 is an apocalyptic number.

It is an amenable number.

133534481 is a deficient number, since it is larger than the sum of its proper divisors (5805871).

133534481 is an equidigital number, since it uses as much as digits as its factorization.

133534481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805870.

The product of its digits is 17280, while the sum is 32.

The square root of 133534481 is about 11555.7120507565. The cubic root of 133534481 is about 511.1297281061.

The spelling of 133534481 in words is "one hundred thirty-three million, five hundred thirty-four thousand, four hundred eighty-one".