215272505 has 8 divisors (see below), whose sum is σ = 295230912. Its totient is φ = 147615408.

The previous prime is 215272487. The next prime is 215272507. The reversal of 215272505 is 505272512.

215272505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 215272505 - 2¹⁶ = 215206969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215272507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3075287 + ... + 3075356.

It is an arithmetic number, because the mean of its divisors is an integer number (36903864).

Almost surely, 2^215272505 is an apocalyptic number.

It is an amenable number.

215272505 is a deficient number, since it is larger than the sum of its proper divisors (79958407).

215272505 is an equidigital number, since it uses as much as digits as its factorization.

215272505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150655.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 215272505 is about 14672.1676994233. The cubic root of 215272505 is about 599.3256358575.

The spelling of 215272505 in words is "two hundred fifteen million, two hundred seventy-two thousand, five hundred five".