56220077 has 2 divisors, whose sum is σ = 56220078. Its totient is φ = 56220076.

The previous prime is 56220053. The next prime is 56220083. The reversal of 56220077 is 77002265.

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., 54848836 + 1371241 = 7406^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 56220077 - 2⁶ = 56220013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56220007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28110038 + 28110039.

It is an arithmetic number, because the mean of its divisors is an integer number (28110039).

Almost surely, 2^56220077 is an apocalyptic number.

It is an amenable number.

56220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

56220077 is an equidigital number, since it uses as much as digits as its factorization.

56220077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 56220077 is about 7498.0048679632. The cubic root of 56220077 is about 383.0867625838.

The spelling of 56220077 in words is "fifty-six million, two hundred twenty thousand, seventy-seven".