56381383 has 2 divisors, whose sum is σ = 56381384. Its totient is φ = 56381382.

The previous prime is 56381323. The next prime is 56381387. The reversal of 56381383 is 38318365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56381383 - 2²¹ = 54284231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56381387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28190691 + 28190692.

It is an arithmetic number, because the mean of its divisors is an integer number (28190692).

Almost surely, 2^56381383 is an apocalyptic number.

56381383 is a deficient number, since it is larger than the sum of its proper divisors (1).

56381383 is an equidigital number, since it uses as much as digits as its factorization.

56381383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 56381383 is about 7508.7537581146. The cubic root of 56381383 is about 383.4527954491.

It can be divided in two parts, 5638 and 1383, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 56381383 in words is "fifty-six million, three hundred eighty-one thousand, three hundred eighty-three".