215393 has 2 divisors, whose sum is σ = 215394. Its totient is φ = 215392.

The previous prime is 215389. The next prime is 215399. The reversal of 215393 is 393512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214369 + 1024 = 463^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 215393 - 2² = 215389 is a prime.

It is not a weakly prime, because it can be changed into another prime (215399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107696 + 107697.

It is an arithmetic number, because the mean of its divisors is an integer number (107697).

2²¹⁵³⁹³ is an apocalyptic number.

It is an amenable number.

215393 is a deficient number, since it is larger than the sum of its proper divisors (1).

215393 is an equidigital number, since it uses as much as digits as its factorization.

215393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 23.

The square root of 215393 is about 464.1045140914. The cubic root of 215393 is about 59.9437435663.

The spelling of 215393 in words is "two hundred fifteen thousand, three hundred ninety-three".