133639053 has 4 divisors (see below), whose sum is σ = 178185408. Its totient is φ = 89092700.

The previous prime is 133639021. The next prime is 133639067. The reversal of 133639053 is 350936331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133639053 - 2⁵ = 133639021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133639003) 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, 22273173 + ... + 22273178.

It is an arithmetic number, because the mean of its divisors is an integer number (44546352).

Almost surely, 2^133639053 is an apocalyptic number.

It is an amenable number.

133639053 is a deficient number, since it is larger than the sum of its proper divisors (44546355).

133639053 is an equidigital number, since it uses as much as digits as its factorization.

133639053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44546354.

The product of its (nonzero) digits is 21870, while the sum is 33.

The square root of 133639053 is about 11560.2358539954. The cubic root of 133639053 is about 511.2631166542.

The spelling of 133639053 in words is "one hundred thirty-three million, six hundred thirty-nine thousand, fifty-three".