133013055 has 32 divisors (see below), whose sum is σ = 248408064. Its totient is φ = 59510016.

The previous prime is 133013051. The next prime is 133013057. The reversal of 133013055 is 550310331.

It is a happy number.

It is not a de Polignac number, because 133013055 - 2² = 133013051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133013051) 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, 8542 + ... + 18411.

It is an arithmetic number, because the mean of its divisors is an integer number (7762752).

Almost surely, 2^133013055 is an apocalyptic number.

133013055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133013055 is a deficient number, since it is larger than the sum of its proper divisors (115395009).

133013055 is a wasteful number, since it uses less digits than its factorization.

133013055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27015.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 133013055 is about 11533.1285868146. The cubic root of 133013055 is about 510.4635731172.

Adding to 133013055 its reverse (550310331), we get a palindrome (683323386).

The spelling of 133013055 in words is "one hundred thirty-three million, thirteen thousand, fifty-five".