56906569 has 2 divisors, whose sum is σ = 56906570. Its totient is φ = 56906568.

The previous prime is 56906567. The next prime is 56906593. The reversal of 56906569 is 96560965.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30250000 + 26656569 = 5500^2 + 5163^2 .

It is a cyclic number.

It is not a de Polignac number, because 56906569 - 2¹ = 56906567 is a prime.

It is a super-2 number, since 2×56906569² = 6476715190703522, which contains 22 as substring.

Together with 56906567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56906561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28453284 + 28453285.

It is an arithmetic number, because the mean of its divisors is an integer number (28453285).

Almost surely, 2^56906569 is an apocalyptic number.

It is an amenable number.

56906569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56906569 is an equidigital number, since it uses as much as digits as its factorization.

56906569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 56906569 is about 7543.6442784638. The cubic root of 56906569 is about 384.6397236833.

It can be divided in two parts, 56906 and 569, that added together give a palindrome (57475).

The spelling of 56906569 in words is "fifty-six million, nine hundred six thousand, five hundred sixty-nine".