215495 has 16 divisors (see below), whose sum is σ = 304128. Its totient is φ = 143520.

The previous prime is 215483. The next prime is 215497. The reversal of 215495 is 594512.

It is not a de Polignac number, because 215495 - 2⁸ = 215239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1580 + ... + 1710.

It is an arithmetic number, because the mean of its divisors is an integer number (19008).

2²¹⁵⁴⁹⁵ is an apocalyptic number.

215495 is a deficient number, since it is larger than the sum of its proper divisors (88633).

215495 is a wasteful number, since it uses less digits than its factorization.

215495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its digits is 1800, while the sum is 26.

The square root of 215495 is about 464.2143901259. The cubic root of 215495 is about 59.9532042529.

The spelling of 215495 in words is "two hundred fifteen thousand, four hundred ninety-five".