215055466 has 4 divisors (see below), whose sum is σ = 322583202. Its totient is φ = 107527732.

The previous prime is 215055443. The next prime is 215055469. The reversal of 215055466 is 664550512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 177662241 + 37393225 = 13329^2 + 6115^2 .

It is not an unprimeable number, because it can be changed into a prime (215055469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53763865 + ... + 53763868.

Almost surely, 2^215055466 is an apocalyptic number.

215055466 is a deficient number, since it is larger than the sum of its proper divisors (107527736).

215055466 is a wasteful number, since it uses less digits than its factorization.

215055466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107527735.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 215055466 is about 14664.7695515477. The cubic root of 215055466 is about 599.1241535920.

The spelling of 215055466 in words is "two hundred fifteen million, fifty-five thousand, four hundred sixty-six".