56842369 has 2 divisors, whose sum is σ = 56842370. Its totient is φ = 56842368.

The previous prime is 56842367. The next prime is 56842381. The reversal of 56842369 is 96324865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34374769 + 22467600 = 5863^2 + 4740^2 .

It is a cyclic number.

It is not a de Polignac number, because 56842369 - 2¹ = 56842367 is a prime.

It is a super-2 number, since 2×56842369² = 6462109827064322, which contains 22 as substring.

Together with 56842367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56842363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28421184 + 28421185.

It is an arithmetic number, because the mean of its divisors is an integer number (28421185).

Almost surely, 2^56842369 is an apocalyptic number.

It is an amenable number.

56842369 is a deficient number, since it is larger than the sum of its proper divisors (1).

56842369 is an equidigital number, since it uses as much as digits as its factorization.

56842369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 56842369 is about 7539.3878398714. The cubic root of 56842369 is about 384.4950235619.

The spelling of 56842369 in words is "fifty-six million, eight hundred forty-two thousand, three hundred sixty-nine".