215252084 has 6 divisors (see below), whose sum is σ = 376691154. Its totient is φ = 107626040.

The previous prime is 215252077. The next prime is 215252143. The reversal of 215252084 is 480252512.

It can be written as a sum of positive squares in only one way, i.e., 202492900 + 12759184 = 14230^2 + 3572^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26906507 + ... + 26906514.

It is an arithmetic number, because the mean of its divisors is an integer number (62781859).

Almost surely, 2^215252084 is an apocalyptic number.

It is an amenable number.

215252084 is a deficient number, since it is larger than the sum of its proper divisors (161439070).

215252084 is a wasteful number, since it uses less digits than its factorization.

215252084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53813025 (or 53813023 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 215252084 is about 14671.4717734793. The cubic root of 215252084 is about 599.3066843494.

The spelling of 215252084 in words is "two hundred fifteen million, two hundred fifty-two thousand, eighty-four".