51827811 has 16 divisors (see below), whose sum is σ = 79601664. Its totient is φ = 29381184.

The previous prime is 51827807. The next prime is 51827819. The reversal of 51827811 is 11872815.

51827811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51827811 - 2² = 51827807 is a prime.

It is a super-2 number, since 2×51827811² = 5372243986103442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51827819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7050 + ... + 12383.

It is an arithmetic number, because the mean of its divisors is an integer number (4975104).

Almost surely, 2^51827811 is an apocalyptic number.

51827811 is a deficient number, since it is larger than the sum of its proper divisors (27773853).

51827811 is a wasteful number, since it uses less digits than its factorization.

51827811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19570.

The product of its digits is 4480, while the sum is 33.

The square root of 51827811 is about 7199.1534919044. The cubic root of 51827811 is about 372.8386746143.

The spelling of 51827811 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred eleven".