133500457 has 4 divisors (see below), whose sum is σ = 133756240. Its totient is φ = 133244676.

The previous prime is 133500407. The next prime is 133500491. The reversal of 133500457 is 754005331.

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.

It is a cyclic number.

It is not a de Polignac number, because 133500457 - 2²³ = 125111849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133500407) 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, 127107 + ... + 128152.

It is an arithmetic number, because the mean of its divisors is an integer number (33439060).

Almost surely, 2^133500457 is an apocalyptic number.

It is an amenable number.

133500457 is a deficient number, since it is larger than the sum of its proper divisors (255783).

133500457 is an equidigital number, since it uses as much as digits as its factorization.

133500457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255782.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 133500457 is about 11554.2397845986. The cubic root of 133500457 is about 511.0863132144.

Adding to 133500457 its reverse (754005331), we get a palindrome (887505788).

The spelling of 133500457 in words is "one hundred thirty-three million, five hundred thousand, four hundred fifty-seven".