51827807 has 2 divisors, whose sum is σ = 51827808. Its totient is φ = 51827806.

The previous prime is 51827803. The next prime is 51827819. The reversal of 51827807 is 70872815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51827807 - 2² = 51827803 is a prime.

It is a super-2 number, since 2×51827807² = 5372243156858498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51827803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913903 + 25913904.

It is an arithmetic number, because the mean of its divisors is an integer number (25913904).

Almost surely, 2^51827807 is an apocalyptic number.

51827807 is a deficient number, since it is larger than the sum of its proper divisors (1).

51827807 is an equidigital number, since it uses as much as digits as its factorization.

51827807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 51827807 is about 7199.1532140940. The cubic root of 51827807 is about 372.8386650226.

The spelling of 51827807 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred seven".