215446241 has 2 divisors, whose sum is σ = 215446242. Its totient is φ = 215446240.

The previous prime is 215446237. The next prime is 215446277. The reversal of 215446241 is 142644512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198669025 + 16777216 = 14095^2 + 4096^2 .

It is a cyclic number.

It is not a de Polignac number, because 215446241 - 2² = 215446237 is a prime.

It is a super-2 number, since 2×215446241² = 92834165522060162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215446201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107723120 + 107723121.

It is an arithmetic number, because the mean of its divisors is an integer number (107723121).

Almost surely, 2^215446241 is an apocalyptic number.

It is an amenable number.

215446241 is a deficient number, since it is larger than the sum of its proper divisors (1).

215446241 is an equidigital number, since it uses as much as digits as its factorization.

215446241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 215446241 is about 14678.0871028891. The cubic root of 215446241 is about 599.4868213898.

The spelling of 215446241 in words is "two hundred fifteen million, four hundred forty-six thousand, two hundred forty-one".