2102445 has 24 divisors (see below), whose sum is σ = 3837600. Its totient is φ = 1061856.

The previous prime is 2102431. The next prime is 2102459. The reversal of 2102445 is 5442012.

It is an interprime number because it is at equal distance from previous prime (2102431) and next prime (2102459).

It is a de Polignac number, because none of the positive numbers 2^k-2102445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (159900).

2^2102445 is an apocalyptic number.

It is an amenable number.

2102445 is a deficient number, since it is larger than the sum of its proper divisors (1735155).

2102445 is a wasteful number, since it uses less digits than its factorization.

2102445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2102445 is about 1449.9810343587. The cubic root of 2102445 is about 128.1075958910.

Adding to 2102445 its reverse (5442012), we get a palindrome (7544457).

The spelling of 2102445 in words is "two million, one hundred two thousand, four hundred forty-five".