133146501 has 4 divisors (see below), whose sum is σ = 177528672. Its totient is φ = 88764332.

The previous prime is 133146479. The next prime is 133146523. The reversal of 133146501 is 105641331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105641331 = 3 ⋅35213777.

It is an interprime number because it is at equal distance from previous prime (133146479) and next prime (133146523).

It is a cyclic number.

It is not a de Polignac number, because 133146501 - 2⁶ = 133146437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133146001) 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, 22191081 + ... + 22191086.

It is an arithmetic number, because the mean of its divisors is an integer number (44382168).

Almost surely, 2^133146501 is an apocalyptic number.

It is an amenable number.

133146501 is a deficient number, since it is larger than the sum of its proper divisors (44382171).

133146501 is an equidigital number, since it uses as much as digits as its factorization.

133146501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44382170.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 133146501 is about 11538.9124704194. The cubic root of 133146501 is about 510.6342244223.

Adding to 133146501 its reverse (105641331), we get a palindrome (238787832).

The spelling of 133146501 in words is "one hundred thirty-three million, one hundred forty-six thousand, five hundred one".