133764451 has 4 divisors (see below), whose sum is σ = 133792504. Its totient is φ = 133736400.

The previous prime is 133764431. The next prime is 133764457. The reversal of 133764451 is 154467331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133764451 - 2²³ = 125375843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133764457) 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, 4890 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (33448126).

Almost surely, 2^133764451 is an apocalyptic number.

133764451 is a deficient number, since it is larger than the sum of its proper divisors (28053).

133764451 is an equidigital number, since it uses as much as digits as its factorization.

133764451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052.

The product of its digits is 30240, while the sum is 34.

The square root of 133764451 is about 11565.6582605574. The cubic root of 133764451 is about 511.4229784329.

The spelling of 133764451 in words is "one hundred thirty-three million, seven hundred sixty-four thousand, four hundred fifty-one".