2548381 has 6 divisors (see below), whose sum is σ = 2801246. Its totient is φ = 2316600.

The previous prime is 2548379. The next prime is 2548391. The reversal of 2548381 is 1838452.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 4356 = 1595^2 + 66^2 .

It is not a de Polignac number, because 2548381 - 2¹ = 2548379 is a prime.

It is a super-2 number, since 2×2548381² = 12988491442322, which contains 22 as substring.

It is a Duffinian number.

2548381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2548361) 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, 10410 + ... + 10651.

2^2548381 is an apocalyptic number.

It is an amenable number.

2548381 is a deficient number, since it is larger than the sum of its proper divisors (252865).

2548381 is a wasteful number, since it uses less digits than its factorization.

2548381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21083 (or 21072 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 2548381 is about 1596.3649332155. The cubic root of 2548381 is about 136.5908013073.

The spelling of 2548381 in words is "two million, five hundred forty-eight thousand, three hundred eighty-one".