133441155 has 16 divisors (see below), whose sum is σ = 237228960. Its totient is φ = 71168544.

The previous prime is 133441141. The next prime is 133441157. The reversal of 133441155 is 551144331.

It is a happy number.

It is not a de Polignac number, because 133441155 - 2¹⁷ = 133310083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133441157) 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, 494092 + ... + 494361.

It is an arithmetic number, because the mean of its divisors is an integer number (14826810).

Almost surely, 2^133441155 is an apocalyptic number.

133441155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133441155 is a deficient number, since it is larger than the sum of its proper divisors (103787805).

133441155 is an equidigital number, since it uses as much as digits as its factorization.

133441155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988467 (or 988461 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 133441155 is about 11551.6732554206. The cubic root of 133441155 is about 511.0106257596.

Adding to 133441155 its reverse (551144331), we get a palindrome (684585486).

The spelling of 133441155 in words is "one hundred thirty-three million, four hundred forty-one thousand, one hundred fifty-five".