51616801 has 2 divisors, whose sum is σ = 51616802. Its totient is φ = 51616800.

The previous prime is 51616759. The next prime is 51616843. The reversal of 51616801 is 10861615.

It is a balanced prime because it is at equal distance from previous prime (51616759) and next prime (51616843).

It can be written as a sum of positive squares in only one way, i.e., 29149201 + 22467600 = 5399^2 + 4740^2 .

It is a cyclic number.

It is not a de Polignac number, because 51616801 - 2¹¹ = 51614753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51616801.

It is not a weakly prime, because it can be changed into another prime (51616871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25808400 + 25808401.

It is an arithmetic number, because the mean of its divisors is an integer number (25808401).

Almost surely, 2^51616801 is an apocalyptic number.

It is an amenable number.

51616801 is a deficient number, since it is larger than the sum of its proper divisors (1).

51616801 is an equidigital number, since it uses as much as digits as its factorization.

51616801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 51616801 is about 7184.4833495527. The cubic root of 51616801 is about 372.3319987723.

The spelling of 51616801 in words is "fifty-one million, six hundred sixteen thousand, eight hundred one".