2126565 has 48 divisors (see below), whose sum is σ = 4338048. Its totient is φ = 943488.

The previous prime is 2126549. The next prime is 2126567. The reversal of 2126565 is 5656212.

2126565 is a `hidden beast` number, since 2 + 1 + 2 + 656 + 5 = 666.

It is not a de Polignac number, because 2126565 - 2⁴ = 2126549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13467 + ... + 13623.

It is an arithmetic number, because the mean of its divisors is an integer number (90376).

2^2126565 is an apocalyptic number.

It is an amenable number.

2126565 is an abundant number, since it is smaller than the sum of its proper divisors (2211483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126565 is a wasteful number, since it uses less digits than its factorization.

2126565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 215 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2126565 is about 1458.2746654866. The cubic root of 2126565 is about 128.5956330092.

The spelling of 2126565 in words is "two million, one hundred twenty-six thousand, five hundred sixty-five".