51986177 has 2 divisors, whose sum is σ = 51986178. Its totient is φ = 51986176.

The previous prime is 51986167. The next prime is 51986191. The reversal of 51986177 is 77168915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 2972176 = 7001^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 51986177 - 2²⁴ = 35208961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51986107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25993088 + 25993089.

It is an arithmetic number, because the mean of its divisors is an integer number (25993089).

Almost surely, 2^51986177 is an apocalyptic number.

It is an amenable number.

51986177 is a deficient number, since it is larger than the sum of its proper divisors (1).

51986177 is an equidigital number, since it uses as much as digits as its factorization.

51986177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 51986177 is about 7210.1440346223. The cubic root of 51986177 is about 373.2180393522.

The spelling of 51986177 in words is "fifty-one million, nine hundred eighty-six thousand, one hundred seventy-seven".