133315253 has 8 divisors (see below), whose sum is σ = 135838296. Its totient is φ = 130816000.

The previous prime is 133315211. The next prime is 133315271. The reversal of 133315253 is 352513331.

It can be written as a sum of positive squares in 4 ways, for example, as 16826404 + 116488849 = 4102^2 + 10793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133315253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133312253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5573 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (16979787).

Almost surely, 2^133315253 is an apocalyptic number.

It is an amenable number.

133315253 is a deficient number, since it is larger than the sum of its proper divisors (2523043).

133315253 is a wasteful number, since it uses less digits than its factorization.

133315253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11895.

The product of its digits is 4050, while the sum is 26.

The square root of 133315253 is about 11546.2224558511. Note that the first 3 decimals coincide. The cubic root of 133315253 is about 510.8498620019.

Adding to 133315253 its reverse (352513331), we get a palindrome (485828584).

The spelling of 133315253 in words is "one hundred thirty-three million, three hundred fifteen thousand, two hundred fifty-three".