133533413 has 8 divisors (see below), whose sum is σ = 145230456. Its totient is φ = 122040000.

The previous prime is 133533383. The next prime is 133533427. The reversal of 133533413 is 314335331.

It can be written as a sum of positive squares in 4 ways, for example, as 1329409 + 132204004 = 1153^2 + 11498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133533413 - 2¹² = 133529317 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 (133533443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49538 + ... + 52163.

It is an arithmetic number, because the mean of its divisors is an integer number (18153807).

Almost surely, 2^133533413 is an apocalyptic number.

133533413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133533413 is a deficient number, since it is larger than the sum of its proper divisors (11697043).

133533413 is a wasteful number, since it uses less digits than its factorization.

133533413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101815.

The product of its digits is 4860, while the sum is 26.

The square root of 133533413 is about 11555.6658397515. The cubic root of 133533413 is about 511.1283654418.

Adding to 133533413 its reverse (314335331), we get a palindrome (447868744).

The spelling of 133533413 in words is "one hundred thirty-three million, five hundred thirty-three thousand, four hundred thirteen".