133770155 has 4 divisors (see below), whose sum is σ = 160524192. Its totient is φ = 107016120.

The previous prime is 133770137. The next prime is 133770179. The reversal of 133770155 is 551077331.

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

It is not a de Polignac number, because 133770155 - 2¹⁰ = 133769131 is a prime.

It is a Duffinian number.

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, 13377011 + ... + 13377020.

It is an arithmetic number, because the mean of its divisors is an integer number (40131048).

Almost surely, 2^133770155 is an apocalyptic number.

133770155 is a deficient number, since it is larger than the sum of its proper divisors (26754037).

133770155 is an equidigital number, since it uses as much as digits as its factorization.

133770155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754036.

The product of its (nonzero) digits is 11025, while the sum is 32.

The square root of 133770155 is about 11565.9048500323. The cubic root of 133770155 is about 511.4302477165.

The spelling of 133770155 in words is "one hundred thirty-three million, seven hundred seventy thousand, one hundred fifty-five".