133250541 has 4 divisors (see below), whose sum is σ = 177667392. Its totient is φ = 88833692.

The previous prime is 133250531. The next prime is 133250561. The reversal of 133250541 is 145052331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145052331 = 3 ⋅48350777.

It is a cyclic number.

It is not a de Polignac number, because 133250541 - 2¹⁰ = 133249517 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 (133250521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22208421 + ... + 22208426.

It is an arithmetic number, because the mean of its divisors is an integer number (44416848).

Almost surely, 2^133250541 is an apocalyptic number.

It is an amenable number.

133250541 is a deficient number, since it is larger than the sum of its proper divisors (44416851).

133250541 is an equidigital number, since it uses as much as digits as its factorization.

133250541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44416850.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 133250541 is about 11543.4198139026. The cubic root of 133250541 is about 510.7671921252.

The spelling of 133250541 in words is "one hundred thirty-three million, two hundred fifty thousand, five hundred forty-one".