56806261 has 2 divisors, whose sum is σ = 56806262. Its totient is φ = 56806260.

The previous prime is 56806247. The next prime is 56806271. The reversal of 56806261 is 16260865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 2268036 = 7385^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 56806261 - 2¹³ = 56798069 is a prime.

It is equal to p_3383638 and since 56806261 and 3383638 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56806201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28403130 + 28403131.

It is an arithmetic number, because the mean of its divisors is an integer number (28403131).

Almost surely, 2^56806261 is an apocalyptic number.

It is an amenable number.

56806261 is a deficient number, since it is larger than the sum of its proper divisors (1).

56806261 is an equidigital number, since it uses as much as digits as its factorization.

56806261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 56806261 is about 7536.9928353422. The cubic root of 56806261 is about 384.4135920094.

The spelling of 56806261 in words is "fifty-six million, eight hundred six thousand, two hundred sixty-one".