215405041 has 2 divisors, whose sum is σ = 215405042. Its totient is φ = 215405040.

The previous prime is 215405027. The next prime is 215405059. The reversal of 215405041 is 140504512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148230625 + 67174416 = 12175^2 + 8196^2 .

It is a cyclic number.

It is not a de Polignac number, because 215405041 - 2¹³ = 215396849 is a prime.

It is not a weakly prime, because it can be changed into another prime (215400041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107702520 + 107702521.

It is an arithmetic number, because the mean of its divisors is an integer number (107702521).

Almost surely, 2^215405041 is an apocalyptic number.

It is an amenable number.

215405041 is a deficient number, since it is larger than the sum of its proper divisors (1).

215405041 is an equidigital number, since it uses as much as digits as its factorization.

215405041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 215405041 is about 14676.6835831532. The cubic root of 215405041 is about 599.4486054657.

Adding to 215405041 its reverse (140504512), we get a palindrome (355909553).

The spelling of 215405041 in words is "two hundred fifteen million, four hundred five thousand, forty-one".