133355545 has 4 divisors (see below), whose sum is σ = 160026660. Its totient is φ = 106684432.

The previous prime is 133355533. The next prime is 133355557. The reversal of 133355545 is 545553331.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (133355533) and next prime (133355557).

It can be written as a sum of positive squares in 2 ways, for example, as 73633561 + 59721984 = 8581^2 + 7728^2 .

It is a cyclic number.

It is not a de Polignac number, because 133355545 - 2¹¹ = 133353497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133355545.

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, 13335550 + ... + 13335559.

It is an arithmetic number, because the mean of its divisors is an integer number (40006665).

Almost surely, 2^133355545 is an apocalyptic number.

It is an amenable number.

133355545 is a deficient number, since it is larger than the sum of its proper divisors (26671115).

133355545 is an equidigital number, since it uses as much as digits as its factorization.

133355545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26671114.

The product of its digits is 67500, while the sum is 34.

The square root of 133355545 is about 11547.9671371198. The cubic root of 133355545 is about 510.9013217034.

The spelling of 133355545 in words is "one hundred thirty-three million, three hundred fifty-five thousand, five hundred forty-five".