51201100057 has 2 divisors, whose sum is σ = 51201100058. Its totient is φ = 51201100056.

The previous prime is 51201100043. The next prime is 51201100061. The reversal of 51201100057 is 75000110215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39259855881 + 11941244176 = 198141^2 + 109276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51201100057 is a prime.

It is not a weakly prime, because it can be changed into another prime (51201100037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25600550028 + 25600550029.

It is an arithmetic number, because the mean of its divisors is an integer number (25600550029).

Almost surely, 2^51201100057 is an apocalyptic number.

It is an amenable number.

51201100057 is a deficient number, since it is larger than the sum of its proper divisors (1).

51201100057 is an equidigital number, since it uses as much as digits as its factorization.

51201100057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

The spelling of 51201100057 in words is "fifty-one billion, two hundred one million, one hundred thousand, fifty-seven".