215214047 has 2 divisors, whose sum is σ = 215214048. Its totient is φ = 215214046.

The previous prime is 215213989. The next prime is 215214049. The reversal of 215214047 is 740412512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215214047 - 2¹⁰ = 215213023 is a prime.

It is a super-2 number, since 2×215214047² = 92634172052236418, which contains 22 as substring.

Together with 215214049, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215214049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107607023 + 107607024.

It is an arithmetic number, because the mean of its divisors is an integer number (107607024).

Almost surely, 2^215214047 is an apocalyptic number.

215214047 is a deficient number, since it is larger than the sum of its proper divisors (1).

215214047 is an equidigital number, since it uses as much as digits as its factorization.

215214047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 215214047 is about 14670.1754249907. The cubic root of 215214047 is about 599.2713812902.

Adding to 215214047 its reverse (740412512), we get a palindrome (955626559).

The spelling of 215214047 in words is "two hundred fifteen million, two hundred fourteen thousand, forty-seven".