56257469 has 2 divisors, whose sum is σ = 56257470. Its totient is φ = 56257468.

The previous prime is 56257463. The next prime is 56257507. The reversal of 56257469 is 96475265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 14822500 = 6437^2 + 3850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56257469 is a prime.

It is a super-2 number, since 2×56257469² = 6329805636571922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56257463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28128734 + 28128735.

It is an arithmetic number, because the mean of its divisors is an integer number (28128735).

Almost surely, 2^56257469 is an apocalyptic number.

It is an amenable number.

56257469 is a deficient number, since it is larger than the sum of its proper divisors (1).

56257469 is an equidigital number, since it uses as much as digits as its factorization.

56257469 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 56257469 is about 7500.4979168053. The cubic root of 56257469 is about 383.1716741578.

The spelling of 56257469 in words is "fifty-six million, two hundred fifty-seven thousand, four hundred sixty-nine".