51777601 has 2 divisors, whose sum is σ = 51777602. Its totient is φ = 51777600.

The previous prime is 51777581. The next prime is 51777613. The reversal of 51777601 is 10677715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 9006001 = 6540^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 51777601 - 2⁵ = 51777569 is a prime.

It is not a weakly prime, because it can be changed into another prime (51777001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25888800 + 25888801.

It is an arithmetic number, because the mean of its divisors is an integer number (25888801).

Almost surely, 2^51777601 is an apocalyptic number.

It is an amenable number.

51777601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51777601 is an equidigital number, since it uses as much as digits as its factorization.

51777601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 51777601 is about 7195.6654313552. The cubic root of 51777601 is about 372.7182355550.

The spelling of 51777601 in words is "fifty-one million, seven hundred seventy-seven thousand, six hundred one".