56756429 has 2 divisors, whose sum is σ = 56756430. Its totient is φ = 56756428.

The previous prime is 56756389. The next prime is 56756459. The reversal of 56756429 is 92465765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53509225 + 3247204 = 7315^2 + 1802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56756429 is a prime.

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 56756429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56756459) 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, 28378214 + 28378215.

It is an arithmetic number, because the mean of its divisors is an integer number (28378215).

Almost surely, 2^56756429 is an apocalyptic number.

It is an amenable number.

56756429 is a deficient number, since it is larger than the sum of its proper divisors (1).

56756429 is an equidigital number, since it uses as much as digits as its factorization.

56756429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 56756429 is about 7533.6862822924. The cubic root of 56756429 is about 384.3011530991.

It can be divided in two parts, 5675642 and 9, that multiplied together give a triangular number (51080778 = T₁₀₁₀₇).

The spelling of 56756429 in words is "fifty-six million, seven hundred fifty-six thousand, four hundred twenty-nine".