133121753 has 2 divisors, whose sum is σ = 133121754. Its totient is φ = 133121752.

The previous prime is 133121741. The next prime is 133121767. The reversal of 133121753 is 357121331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84860944 + 48260809 = 9212^2 + 6947^2 .

It is a cyclic number.

It is not a de Polignac number, because 133121753 - 2⁸ = 133121497 is a prime.

It is a super-2 number, since 2×133121753² = 35442802243586018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133121453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66560876 + 66560877.

It is an arithmetic number, because the mean of its divisors is an integer number (66560877).

Almost surely, 2^133121753 is an apocalyptic number.

It is an amenable number.

133121753 is a deficient number, since it is larger than the sum of its proper divisors (1).

133121753 is an equidigital number, since it uses as much as digits as its factorization.

133121753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 26.

The square root of 133121753 is about 11537.8400491600. The cubic root of 133121753 is about 510.6025851910.

The spelling of 133121753 in words is "one hundred thirty-three million, one hundred twenty-one thousand, seven hundred fifty-three".