2145455 has 12 divisors (see below), whose sum is σ = 2788920. Its totient is φ = 1583712.

The previous prime is 2145443. The next prime is 2145469. The reversal of 2145455 is 5545412.

It is not a de Polignac number, because 2145455 - 2⁴ = 2145439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425 + ... + 2114.

It is an arithmetic number, because the mean of its divisors is an integer number (232410).

2^2145455 is an apocalyptic number.

2145455 is a deficient number, since it is larger than the sum of its proper divisors (643465).

2145455 is a wasteful number, since it uses less digits than its factorization.

2145455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2557 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 2145455 is about 1464.7371777899. The cubic root of 2145455 is about 128.9752771964.

The spelling of 2145455 in words is "two million, one hundred forty-five thousand, four hundred fifty-five".