56192281 has 2 divisors, whose sum is σ = 56192282. Its totient is φ = 56192280.

The previous prime is 56192273. The next prime is 56192287. The reversal of 56192281 is 18229165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50993881 + 5198400 = 7141^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 56192281 - 2³ = 56192273 is a prime.

It is a super-2 number, since 2×56192281² = 6315144887965922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56192287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28096140 + 28096141.

It is an arithmetic number, because the mean of its divisors is an integer number (28096141).

Almost surely, 2^56192281 is an apocalyptic number.

It is an amenable number.

56192281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56192281 is an equidigital number, since it uses as much as digits as its factorization.

56192281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 56192281 is about 7496.1510790538. The cubic root of 56192281 is about 383.0236176743.

The spelling of 56192281 in words is "fifty-six million, one hundred ninety-two thousand, two hundred eighty-one".