133252919 has 4 divisors (see below), whose sum is σ = 141091344. Its totient is φ = 125414496.

The previous prime is 133252907. The next prime is 133252949. The reversal of 133252919 is 919252331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133252919 is a prime.

It is a super-2 number, since 2×133252919² = 35512680844041122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133252949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3919187 + ... + 3919220.

It is an arithmetic number, because the mean of its divisors is an integer number (35272836).

Almost surely, 2^133252919 is an apocalyptic number.

133252919 is a deficient number, since it is larger than the sum of its proper divisors (7838425).

133252919 is an equidigital number, since it uses as much as digits as its factorization.

133252919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7838424.

The product of its digits is 14580, while the sum is 35.

The square root of 133252919 is about 11543.5228158479. The cubic root of 133252919 is about 510.7702305048.

The spelling of 133252919 in words is "one hundred thirty-three million, two hundred fifty-two thousand, nine hundred nineteen".