133105455 has 24 divisors (see below), whose sum is σ = 263676192. Its totient is φ = 60848064.

The previous prime is 133105451. The next prime is 133105471. The reversal of 133105455 is 554501331.

It is not a de Polignac number, because 133105455 - 2² = 133105451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133105451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210964 + ... + 211593.

It is an arithmetic number, because the mean of its divisors is an integer number (10986508).

Almost surely, 2^133105455 is an apocalyptic number.

133105455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133105455 is a deficient number, since it is larger than the sum of its proper divisors (130570737).

133105455 is a wasteful number, since it uses less digits than its factorization.

133105455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422575 (or 422572 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 133105455 is about 11537.1337428323. The cubic root of 133105455 is about 510.5817467721.

Adding to 133105455 its reverse (554501331), we get a palindrome (687606786).

The spelling of 133105455 in words is "one hundred thirty-three million, one hundred five thousand, four hundred fifty-five".