56245381 has 2 divisors, whose sum is σ = 56245382. Its totient is φ = 56245380.

The previous prime is 56245369. The next prime is 56245403. The reversal of 56245381 is 18354265.

56245381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29877156 + 26368225 = 5466^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 56245381 - 2⁹ = 56244869 is a prime.

It is a super-2 number, since 2×56245381² = 6327085767670322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56240381) 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, 28122690 + 28122691.

It is an arithmetic number, because the mean of its divisors is an integer number (28122691).

Almost surely, 2^56245381 is an apocalyptic number.

It is an amenable number.

56245381 is a deficient number, since it is larger than the sum of its proper divisors (1).

56245381 is an equidigital number, since it uses as much as digits as its factorization.

56245381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 56245381 is about 7499.6920603449. The cubic root of 56245381 is about 383.1442282556.

The spelling of 56245381 in words is "fifty-six million, two hundred forty-five thousand, three hundred eighty-one".