215745133 has 8 divisors (see below), whose sum is σ = 227253600. Its totient is φ = 204252048.

The previous prime is 215745119. The next prime is 215745143. The reversal of 215745133 is 331547512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215745133 - 2⁹ = 215744621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215745095 and 215745104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215745143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35223 + ... + 40891.

It is an arithmetic number, because the mean of its divisors is an integer number (28406700).

Almost surely, 2^215745133 is an apocalyptic number.

It is an amenable number.

215745133 is a deficient number, since it is larger than the sum of its proper divisors (11508467).

215745133 is a wasteful number, since it uses less digits than its factorization.

215745133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691.

The product of its digits is 12600, while the sum is 31.

The square root of 215745133 is about 14688.2651460273. The cubic root of 215745133 is about 599.7639191589.

The spelling of 215745133 in words is "two hundred fifteen million, seven hundred forty-five thousand, one hundred thirty-three".