133115503 has 4 divisors (see below), whose sum is σ = 133245648. Its totient is φ = 132985360.

The previous prime is 133115497. The next prime is 133115509. The reversal of 133115503 is 305511331.

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 (133115497) and next prime (133115509).

It is a cyclic number.

It is not a de Polignac number, because 133115503 - 2⁹ = 133114991 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133115509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63526 + ... + 65587.

It is an arithmetic number, because the mean of its divisors is an integer number (33311412).

Almost surely, 2^133115503 is an apocalyptic number.

133115503 is a deficient number, since it is larger than the sum of its proper divisors (130145).

133115503 is a wasteful number, since it uses less digits than its factorization.

133115503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130144.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 133115503 is about 11537.5691980590. The cubic root of 133115503 is about 510.5945942203.

Adding to 133115503 its reverse (305511331), we get a palindrome (438626834).

The spelling of 133115503 in words is "one hundred thirty-three million, one hundred fifteen thousand, five hundred three".