215422655 has 8 divisors (see below), whose sum is σ = 295436832. Its totient is φ = 147718368.

The previous prime is 215422637. The next prime is 215422661. The reversal of 215422655 is 556224512.

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

It is not a de Polignac number, because 215422655 - 2¹⁰ = 215421631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3077432 + ... + 3077501.

It is an arithmetic number, because the mean of its divisors is an integer number (36929604).

Almost surely, 2^215422655 is an apocalyptic number.

215422655 is a deficient number, since it is larger than the sum of its proper divisors (80014177).

215422655 is an equidigital number, since it uses as much as digits as its factorization.

215422655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154945.

The product of its digits is 24000, while the sum is 32.

The square root of 215422655 is about 14677.2836383304. The cubic root of 215422655 is about 599.4649442971.

The spelling of 215422655 in words is "two hundred fifteen million, four hundred twenty-two thousand, six hundred fifty-five".