51771323 has 2 divisors, whose sum is σ = 51771324. Its totient is φ = 51771322.

The previous prime is 51771319. The next prime is 51771329. The reversal of 51771323 is 32317715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51771323 - 2² = 51771319 is a prime.

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, 25885661 + 25885662.

It is an arithmetic number, because the mean of its divisors is an integer number (25885662).

Almost surely, 2^51771323 is an apocalyptic number.

51771323 is a deficient number, since it is larger than the sum of its proper divisors (1).

51771323 is an equidigital number, since it uses as much as digits as its factorization.

51771323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 29.

The square root of 51771323 is about 7195.2291832853. The cubic root of 51771323 is about 372.7031709994.

The spelling of 51771323 in words is "fifty-one million, seven hundred seventy-one thousand, three hundred twenty-three".