2180245 has 8 divisors (see below), whose sum is σ = 2627640. Its totient is φ = 1736640.

The previous prime is 2180221. The next prime is 2180251. The reversal of 2180245 is 5420812.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 2093809 = 294^2 + 1447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2180245 - 2²¹ = 83093 is a prime.

2180245 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535 + ... + 2155.

It is an arithmetic number, because the mean of its divisors is an integer number (328455).

2^2180245 is an apocalyptic number.

It is an amenable number.

2180245 is a deficient number, since it is larger than the sum of its proper divisors (447395).

2180245 is a wasteful number, since it uses less digits than its factorization.

2180245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2180245 is about 1476.5652711614. The cubic root of 2180245 is about 129.6686829524.

The spelling of 2180245 in words is "two million, one hundred eighty thousand, two hundred forty-five".