51827812 has 6 divisors (see below), whose sum is σ = 90698678. Its totient is φ = 25913904.

The previous prime is 51827807. The next prime is 51827819. The reversal of 51827812 is 21872815.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 1218816 = 7114^2 + 1104^2 .

It is a super-2 number, since 2×51827812² = 5372244193414688, 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 polite number, since it can be written as a sum of consecutive naturals, namely, 6478473 + ... + 6478480.

Almost surely, 2^51827812 is an apocalyptic number.

It is an amenable number.

51827812 is a deficient number, since it is larger than the sum of its proper divisors (38870866).

51827812 is a wasteful number, since it uses less digits than its factorization.

51827812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956957 (or 12956955 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 51827812 is about 7199.1535613571. The cubic root of 51827812 is about 372.8386770122.

The spelling of 51827812 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred twelve".