2455381 has 2 divisors, whose sum is σ = 2455382. Its totient is φ = 2455380.

The previous prime is 2455379. The next prime is 2455391. The reversal of 2455381 is 1835542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 3025 = 1566^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455381 - 2¹ = 2455379 is a prime.

It is a super-2 number, since 2×2455381² = 12057791710322, which contains 22 as substring.

Together with 2455379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2455391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227690 + 1227691.

It is an arithmetic number, because the mean of its divisors is an integer number (1227691).

2^2455381 is an apocalyptic number.

It is an amenable number.

2455381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455381 is an equidigital number, since it uses as much as digits as its factorization.

2455381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 2455381 is about 1566.9655388680. The cubic root of 2455381 is about 134.9085983958.

The spelling of 2455381 in words is "two million, four hundred fifty-five thousand, three hundred eighty-one".