2445381 has 12 divisors (see below), whose sum is σ = 3555552. Its totient is φ = 1619496.

The previous prime is 2445379. The next prime is 2445389. The reversal of 2445381 is 1835442.

It is not a de Polignac number, because 2445381 - 2¹ = 2445379 is a prime.

It is a super-2 number, since 2×2445381² = 11959776470322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (296296).

2^2445381 is an apocalyptic number.

It is an amenable number.

2445381 is a deficient number, since it is larger than the sum of its proper divisors (1110171).

2445381 is a wasteful number, since it uses less digits than its factorization.

2445381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1797 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 2445381 is about 1563.7714027312. The cubic root of 2445381 is about 134.7252023352.

It can be divided in two parts, 244 and 5381, that added together give a square (5625 = 75²).

The spelling of 2445381 in words is "two million, four hundred forty-five thousand, three hundred eighty-one".