56850281 has 2 divisors, whose sum is σ = 56850282. Its totient is φ = 56850280.

The previous prime is 56850251. The next prime is 56850293. The reversal of 56850281 is 18205865.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50993881 + 5856400 = 7141^2 + 2420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56850281 is a prime.

It is a super-2 number, since 2×56850281² = 6463908899557922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_3386078 and since 56850281 and 3386078 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56850251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28425140 + 28425141.

It is an arithmetic number, because the mean of its divisors is an integer number (28425141).

Almost surely, 2^56850281 is an apocalyptic number.

It is an amenable number.

56850281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56850281 is an equidigital number, since it uses as much as digits as its factorization.

56850281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 56850281 is about 7539.9125326492. The cubic root of 56850281 is about 384.5128622712.

The spelling of 56850281 in words is "fifty-six million, eight hundred fifty thousand, two hundred eighty-one".