215505214 has 4 divisors (see below), whose sum is σ = 323257824. Its totient is φ = 107752606.

The previous prime is 215505203. The next prime is 215505233. The reversal of 215505214 is 412505512.

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

It is a super-2 number, since 2×215505214² = 92884994522371592, which contains 22 as substring.

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, 53876302 + ... + 53876305.

It is an arithmetic number, because the mean of its divisors is an integer number (80814456).

Almost surely, 2^215505214 is an apocalyptic number.

215505214 is a deficient number, since it is larger than the sum of its proper divisors (107752610).

215505214 is a wasteful number, since it uses less digits than its factorization.

215505214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107752609.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 215505214 is about 14680.0958443738. The cubic root of 215505214 is about 599.5415145559.

The spelling of 215505214 in words is "two hundred fifteen million, five hundred five thousand, two hundred fourteen".