133455255251 has 4 divisors (see below), whose sum is σ = 133456281672. Its totient is φ = 133454228832.

The previous prime is 133455255247. The next prime is 133455255281. The reversal of 133455255251 is 152552554331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133455255251 - 2² = 133455255247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133455255199 and 133455255208.

It is not an unprimeable number, because it can be changed into a prime (133455255281) 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, 284081 + ... + 589586.

It is an arithmetic number, because the mean of its divisors is an integer number (33364070418).

Almost surely, 2^133455255251 is an apocalyptic number.

133455255251 is a deficient number, since it is larger than the sum of its proper divisors (1026421).

133455255251 is an equidigital number, since it uses as much as digits as its factorization.

133455255251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026420.

The product of its digits is 450000, while the sum is 41.

The spelling of 133455255251 in words is "one hundred thirty-three billion, four hundred fifty-five million, two hundred fifty-five thousand, two hundred fifty-one".