133500355 has 4 divisors (see below), whose sum is σ = 160200432. Its totient is φ = 106800280.

The previous prime is 133500343. The next prime is 133500361. The reversal of 133500355 is 553005331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553005331 = 541 ⋅1022191.

It is a de Polignac number, because none of the positive numbers 2^k-133500355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13350031 + ... + 13350040.

It is an arithmetic number, because the mean of its divisors is an integer number (40050108).

Almost surely, 2^133500355 is an apocalyptic number.

133500355 is a deficient number, since it is larger than the sum of its proper divisors (26700077).

133500355 is an equidigital number, since it uses as much as digits as its factorization.

133500355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700076.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 133500355 is about 11554.2353706336. The cubic root of 133500355 is about 511.0861830505.

Adding to 133500355 its reverse (553005331), we get a palindrome (686505686).

The spelling of 133500355 in words is "one hundred thirty-three million, five hundred thousand, three hundred fifty-five".