51827819 has 2 divisors, whose sum is σ = 51827820. Its totient is φ = 51827818.

The previous prime is 51827807. The next prime is 51827837. The reversal of 51827819 is 91872815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51827819 - 2⁴ = 51827803 is a prime.

It is a super-2 number, since 2×51827819² = 5372245644593522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51827869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913909 + 25913910.

It is an arithmetic number, because the mean of its divisors is an integer number (25913910).

Almost surely, 2^51827819 is an apocalyptic number.

51827819 is a deficient number, since it is larger than the sum of its proper divisors (1).

51827819 is an equidigital number, since it uses as much as digits as its factorization.

51827819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 41.

The square root of 51827819 is about 7199.1540475253. The cubic root of 51827819 is about 372.8386937978.

The spelling of 51827819 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred nineteen".