56378669 has 2 divisors, whose sum is σ = 56378670. Its totient is φ = 56378668.

The previous prime is 56378659. The next prime is 56378671. The reversal of 56378669 is 96687365.

56378669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 697225 = 7462^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 56378669 - 2¹⁶ = 56313133 is a prime.

It is a super-2 number, since 2×56378669² = 6357108636423122, which contains 22 as substring.

Together with 56378671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56378629) 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, 28189334 + 28189335.

It is an arithmetic number, because the mean of its divisors is an integer number (28189335).

Almost surely, 2^56378669 is an apocalyptic number.

It is an amenable number.

56378669 is a deficient number, since it is larger than the sum of its proper divisors (1).

56378669 is an equidigital number, since it uses as much as digits as its factorization.

56378669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The square root of 56378669 is about 7508.5730335397. The cubic root of 56378669 is about 383.4466426641.

The spelling of 56378669 in words is "fifty-six million, three hundred seventy-eight thousand, six hundred sixty-nine".