51286357 has 2 divisors, whose sum is σ = 51286358. Its totient is φ = 51286356.

The previous prime is 51286327. The next prime is 51286373. The reversal of 51286357 is 75368215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30846916 + 20439441 = 5554^2 + 4521^2 .

It is a cyclic number.

It is not a de Polignac number, because 51286357 - 2¹¹ = 51284309 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 (51286327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25643178 + 25643179.

It is an arithmetic number, because the mean of its divisors is an integer number (25643179).

Almost surely, 2^51286357 is an apocalyptic number.

It is an amenable number.

51286357 is a deficient number, since it is larger than the sum of its proper divisors (1).

51286357 is an equidigital number, since it uses as much as digits as its factorization.

51286357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 51286357 is about 7161.4493644792. The cubic root of 51286357 is about 371.5357569708.

The spelling of 51286357 in words is "fifty-one million, two hundred eighty-six thousand, three hundred fifty-seven".