51771319 has 2 divisors, whose sum is σ = 51771320. Its totient is φ = 51771318.

The previous prime is 51771277. The next prime is 51771323. The reversal of 51771319 is 91317715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51771319 - 2¹¹ = 51769271 is a prime.

It is a super-2 number, since 2×51771319² = 5360538941999522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51771329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25885659 + 25885660.

It is an arithmetic number, because the mean of its divisors is an integer number (25885660).

Almost surely, 2^51771319 is an apocalyptic number.

51771319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51771319 is an equidigital number, since it uses as much as digits as its factorization.

51771319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615, while the sum is 34.

The square root of 51771319 is about 7195.2289053233. The cubic root of 51771319 is about 372.7031614007.

The spelling of 51771319 in words is "fifty-one million, seven hundred seventy-one thousand, three hundred nineteen".