133355145 has 32 divisors (see below), whose sum is σ = 266019840. Its totient is φ = 55419840.

The previous prime is 133355143. The next prime is 133355153. The reversal of 133355145 is 541553331.

It is not a de Polignac number, because 133355145 - 2¹ = 133355143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133355143) 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, 56575 + ... + 58884.

It is an arithmetic number, because the mean of its divisors is an integer number (8313120).

Almost surely, 2^133355145 is an apocalyptic number.

133355145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133355145 is a deficient number, since it is larger than the sum of its proper divisors (132664695).

133355145 is a wasteful number, since it uses less digits than its factorization.

133355145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115485.

The product of its digits is 13500, while the sum is 30.

The square root of 133355145 is about 11547.9498180413. The cubic root of 133355145 is about 510.9008108866.

The spelling of 133355145 in words is "one hundred thirty-three million, three hundred fifty-five thousand, one hundred forty-five".