133517017 has 4 divisors (see below), whose sum is σ = 136036260. Its totient is φ = 130997776.

The previous prime is 133517011. The next prime is 133517023. The reversal of 133517017 is 710715331.

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 (133517011) and next prime (133517023).

It can be written as a sum of positive squares in 2 ways, for example, as 110754576 + 22762441 = 10524^2 + 4771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133517017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133517011) 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, 1259542 + ... + 1259647.

It is an arithmetic number, because the mean of its divisors is an integer number (34009065).

Almost surely, 2^133517017 is an apocalyptic number.

It is an amenable number.

133517017 is a deficient number, since it is larger than the sum of its proper divisors (2519243).

133517017 is an equidigital number, since it uses as much as digits as its factorization.

133517017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519242.

The product of its (nonzero) digits is 2205, while the sum is 28.

The square root of 133517017 is about 11554.9563824361. The cubic root of 133517017 is about 511.1074448260.

The spelling of 133517017 in words is "one hundred thirty-three million, five hundred seventeen thousand, seventeen".