133256953 has 2 divisors, whose sum is σ = 133256954. Its totient is φ = 133256952.

The previous prime is 133256947. The next prime is 133256993. The reversal of 133256953 is 359652331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 65885689 = 8208^2 + 8117^2 .

It is an emirp because it is prime and its reverse (359652331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133256953 is a prime.

It is not a weakly prime, because it can be changed into another prime (133256923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66628476 + 66628477.

It is an arithmetic number, because the mean of its divisors is an integer number (66628477).

Almost surely, 2^133256953 is an apocalyptic number.

It is an amenable number.

133256953 is a deficient number, since it is larger than the sum of its proper divisors (1).

133256953 is an equidigital number, since it uses as much as digits as its factorization.

133256953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 37.

The square root of 133256953 is about 11543.6975445478. The cubic root of 133256953 is about 510.7753846791.

It can be divided in two parts, 1332 and 56953, that added together give a palindrome (58285).

The spelling of 133256953 in words is "one hundred thirty-three million, two hundred fifty-six thousand, nine hundred fifty-three".