2172315 has 16 divisors (see below), whose sum is σ = 3513888. Its totient is φ = 1145856.

The previous prime is 2172283. The next prime is 2172323. The reversal of 2172315 is 5132712.

It is not a de Polignac number, because 2172315 - 2⁵ = 2172283 is a prime.

2172315 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2172291 and 2172300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (219618).

2^2172315 is an apocalyptic number.

2172315 is a deficient number, since it is larger than the sum of its proper divisors (1341573).

2172315 is a wasteful number, since it uses less digits than its factorization.

2172315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

The product of its digits is 420, while the sum is 21.

The square root of 2172315 is about 1473.8775390106. The cubic root of 2172315 is about 129.5112813972.

The spelling of 2172315 in words is "two million, one hundred seventy-two thousand, three hundred fifteen".