56279969 has 2 divisors, whose sum is σ = 56279970. Its totient is φ = 56279968.

The previous prime is 56279941. The next prime is 56279987. The reversal of 56279969 is 96997265.

56279969 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., 49843600 + 6436369 = 7060^2 + 2537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56279969 is a prime.

It is a super-2 number, since 2×56279969² = 6334869821281922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56279969.

It is not a weakly prime, because it can be changed into another prime (56279929) 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, 28139984 + 28139985.

It is an arithmetic number, because the mean of its divisors is an integer number (28139985).

Almost surely, 2^56279969 is an apocalyptic number.

It is an amenable number.

56279969 is a deficient number, since it is larger than the sum of its proper divisors (1).

56279969 is an equidigital number, since it uses as much as digits as its factorization.

56279969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 56279969 is about 7501.9976672884. The cubic root of 56279969 is about 383.2227501228. Note that the first 3 decimals are identical.

The spelling of 56279969 in words is "fifty-six million, two hundred seventy-nine thousand, nine hundred sixty-nine".