133454857 has 4 divisors (see below), whose sum is σ = 134338816. Its totient is φ = 132570900.

The previous prime is 133454813. The next prime is 133454863. The reversal of 133454857 is 758454331.

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 133454857 - 2⁷ = 133454729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133454957) 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, 441753 + ... + 442054.

It is an arithmetic number, because the mean of its divisors is an integer number (33584704).

Almost surely, 2^133454857 is an apocalyptic number.

It is an amenable number.

133454857 is a deficient number, since it is larger than the sum of its proper divisors (883959).

133454857 is an equidigital number, since it uses as much as digits as its factorization.

133454857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883958.

The product of its digits is 201600, while the sum is 40.

The square root of 133454857 is about 11552.2663144510. The cubic root of 133454857 is about 511.0281156860.

The spelling of 133454857 in words is "one hundred thirty-three million, four hundred fifty-four thousand, eight hundred fifty-seven".