51397827 has 16 divisors (see below), whose sum is σ = 74097408. Its totient is φ = 31502880.

The previous prime is 51397813. The next prime is 51397867. The reversal of 51397827 is 72879315.

It is not a de Polignac number, because 51397827 - 2⁴ = 51397811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51397867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7752 + ... + 12762.

It is an arithmetic number, because the mean of its divisors is an integer number (4631088).

Almost surely, 2^51397827 is an apocalyptic number.

51397827 is a deficient number, since it is larger than the sum of its proper divisors (22699581).

51397827 is a wasteful number, since it uses less digits than its factorization.

51397827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290.

The product of its digits is 105840, while the sum is 42.

The square root of 51397827 is about 7169.2277826834. The cubic root of 51397827 is about 371.8047376799.

The spelling of 51397827 in words is "fifty-one million, three hundred ninety-seven thousand, eight hundred twenty-seven".