133452481 has 2 divisors, whose sum is σ = 133452482. Its totient is φ = 133452480.

The previous prime is 133452479. The next prime is 133452491. The reversal of 133452481 is 184254331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70408881 + 63043600 = 8391^2 + 7940^2 .

It is a cyclic number.

It is not a de Polignac number, because 133452481 - 2¹ = 133452479 is a prime.

It is a super-2 number, since 2×133452481² = 35619129370110722, which contains 22 as substring.

Together with 133452479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133452491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66726240 + 66726241.

It is an arithmetic number, because the mean of its divisors is an integer number (66726241).

Almost surely, 2^133452481 is an apocalyptic number.

It is an amenable number.

133452481 is a deficient number, since it is larger than the sum of its proper divisors (1).

133452481 is an equidigital number, since it uses as much as digits as its factorization.

133452481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 133452481 is about 11552.1634770289. The cubic root of 133452481 is about 511.0250829251.

The spelling of 133452481 in words is "one hundred thirty-three million, four hundred fifty-two thousand, four hundred eighty-one".