215241109 has 8 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 208502736.

The previous prime is 215241073. The next prime is 215241113. The reversal of 215241109 is 901142512.

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 215241109 - 2⁷ = 215240981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215241119) 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, 21517 + ... + 29890.

It is an arithmetic number, because the mean of its divisors is an integer number (27760320).

Almost surely, 2^215241109 is an apocalyptic number.

It is an amenable number.

215241109 is a deficient number, since it is larger than the sum of its proper divisors (6841451).

215241109 is an equidigital number, since it uses as much as digits as its factorization.

215241109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51539.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 215241109 is about 14671.0977435228. The cubic root of 215241109 is about 599.2964986135.

The spelling of 215241109 in words is "two hundred fifteen million, two hundred forty-one thousand, one hundred nine".