133155529 has 4 divisors (see below), whose sum is σ = 143398276. Its totient is φ = 122912784.

The previous prime is 133155523. The next prime is 133155541. The reversal of 133155529 is 925551331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33953929 + 99201600 = 5827^2 + 9960^2 .

It is a cyclic number.

It is not a de Polignac number, because 133155529 - 2¹⁹ = 132631241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133155494 and 133155503.

It is not an unprimeable number, because it can be changed into a prime (133155523) 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, 5121354 + ... + 5121379.

It is an arithmetic number, because the mean of its divisors is an integer number (35849569).

Almost surely, 2^133155529 is an apocalyptic number.

It is an amenable number.

133155529 is a deficient number, since it is larger than the sum of its proper divisors (10242747).

133155529 is a wasteful number, since it uses less digits than its factorization.

133155529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242746.

The product of its digits is 20250, while the sum is 34.

The square root of 133155529 is about 11539.3036618333. The cubic root of 133155529 is about 510.6457653479.

The spelling of 133155529 in words is "one hundred thirty-three million, one hundred fifty-five thousand, five hundred twenty-nine".