215497 has 2 divisors, whose sum is σ = 215498. Its totient is φ = 215496.

The previous prime is 215483. The next prime is 215503. The reversal of 215497 is 794512.

It is a happy number.

215497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179776 + 35721 = 424^2 + 189^2 .

It is a cyclic number.

It is not a de Polignac number, because 215497 - 2¹¹ = 213449 is a prime.

It is a pancake number, because a pancake can be divided into 215497 parts by 656 straight cuts.

215497 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (215417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107748 + 107749.

It is an arithmetic number, because the mean of its divisors is an integer number (107749).

2²¹⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

215497 is a deficient number, since it is larger than the sum of its proper divisors (1).

215497 is an equidigital number, since it uses as much as digits as its factorization.

215497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 215497 is about 464.2165442980. The cubic root of 215497 is about 59.9533897267.

The spelling of 215497 in words is "two hundred fifteen thousand, four hundred ninety-seven".