133655145 has 32 divisors (see below), whose sum is σ = 232025472. Its totient is φ = 65306112.

The previous prime is 133655143. The next prime is 133655153. The reversal of 133655145 is 541556331.

It is not a de Polignac number, because 133655145 - 2¹ = 133655143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133655141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24214 + ... + 29216.

It is an arithmetic number, because the mean of its divisors is an integer number (7250796).

Almost surely, 2^133655145 is an apocalyptic number.

133655145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133655145 is a deficient number, since it is larger than the sum of its proper divisors (98370327).

133655145 is a wasteful number, since it uses less digits than its factorization.

133655145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161.

The product of its digits is 27000, while the sum is 33.

The square root of 133655145 is about 11560.9318396053. The cubic root of 133655145 is about 511.2836368931.

The spelling of 133655145 in words is "one hundred thirty-three million, six hundred fifty-five thousand, one hundred forty-five".