133745655 has 16 divisors (see below), whose sum is σ = 225256320. Its totient is φ = 67576608.

The previous prime is 133745653. The next prime is 133745671. The reversal of 133745655 is 556547331.

It is not a de Polignac number, because 133745655 - 2¹ = 133745653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133745653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234357 + ... + 234926.

It is an arithmetic number, because the mean of its divisors is an integer number (14078520).

Almost surely, 2^133745655 is an apocalyptic number.

133745655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133745655 is a deficient number, since it is larger than the sum of its proper divisors (91510665).

133745655 is a wasteful number, since it uses less digits than its factorization.

133745655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469310.

The product of its digits is 189000, while the sum is 39.

The square root of 133745655 is about 11564.8456539636. The cubic root of 133745655 is about 511.3990229985.

The spelling of 133745655 in words is "one hundred thirty-three million, seven hundred forty-five thousand, six hundred fifty-five".