215796101 has 4 divisors (see below), whose sum is σ = 219333804. Its totient is φ = 212258400.

The previous prime is 215796071. The next prime is 215796107. The reversal of 215796101 is 101697512.

215796101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 14690²+1.

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 7022500 + 208773601 = 2650^2 + 14449^2 .

It is a cyclic number.

It is not a de Polignac number, because 215796101 - 2¹⁰ = 215795077 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 (215796107) 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, 1768760 + ... + 1768881.

It is an arithmetic number, because the mean of its divisors is an integer number (54833451).

Almost surely, 2^215796101 is an apocalyptic number.

It is an amenable number.

215796101 is a deficient number, since it is larger than the sum of its proper divisors (3537703).

215796101 is an equidigital number, since it uses as much as digits as its factorization.

215796101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537702.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 215796101 is about 14690.0000340368. Note that the first 4 decimals coincide. The cubic root of 215796101 is about 599.8111451923.

The spelling of 215796101 in words is "two hundred fifteen million, seven hundred ninety-six thousand, one hundred one".