2256993 has 6 divisors (see below), whose sum is σ = 3260114. Its totient is φ = 1504656.

The previous prime is 2256973. The next prime is 2257001. The reversal of 2256993 is 3996522.

2256993 is a `hidden beast` number, since 2 + 2 + 569 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2214144 + 42849 = 1488^2 + 207^2 .

It is not a de Polignac number, because 2256993 - 2¹⁰ = 2255969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2256913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125380 + ... + 125397.

2^2256993 is an apocalyptic number.

It is an amenable number.

2256993 is a deficient number, since it is larger than the sum of its proper divisors (1003121).

2256993 is a wasteful number, since it uses less digits than its factorization.

2256993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250783 (or 250780 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 2256993 is about 1502.3291916221. The cubic root of 2256993 is about 131.1726837154.

It can be divided in two parts, 2256 and 993, that added together give a square (3249 = 57²).

The spelling of 2256993 in words is "two million, two hundred fifty-six thousand, nine hundred ninety-three".