215450413 has 2 divisors, whose sum is σ = 215450414. Its totient is φ = 215450412.

The previous prime is 215450387. The next prime is 215450437. The reversal of 215450413 is 314054512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195496324 + 19954089 = 13982^2 + 4467^2 .

It is a cyclic number.

It is not a de Polignac number, because 215450413 - 2¹³ = 215442221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215457413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107725206 + 107725207.

It is an arithmetic number, because the mean of its divisors is an integer number (107725207).

Almost surely, 2^215450413 is an apocalyptic number.

It is an amenable number.

215450413 is a deficient number, since it is larger than the sum of its proper divisors (1).

215450413 is an equidigital number, since it uses as much as digits as its factorization.

215450413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 215450413 is about 14678.2292188125. The cubic root of 215450413 is about 599.4906909443.

The spelling of 215450413 in words is "two hundred fifteen million, four hundred fifty thousand, four hundred thirteen".