215029 has 4 divisors (see below), whose sum is σ = 217260. Its totient is φ = 212800.

The previous prime is 214993. The next prime is 215051. The reversal of 215029 is 920512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142129 + 72900 = 377^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 215029 - 2⁹ = 214517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214997 and 215015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (54315).

2²¹⁵⁰²⁹ is an apocalyptic number.

It is an amenable number.

215029 is a deficient number, since it is larger than the sum of its proper divisors (2231).

215029 is a wasteful number, since it uses less digits than its factorization.

215029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 215029 is about 463.7121952246. The cubic root of 215029 is about 59.9099575328.

It can be divided in two parts, 21 and 5029, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 215029 in words is "two hundred fifteen thousand, twenty-nine".