51282811 has 2 divisors, whose sum is σ = 51282812. Its totient is φ = 51282810.

The previous prime is 51282797. The next prime is 51282821. The reversal of 51282811 is 11828215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51282811 - 2⁷ = 51282683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51282811.

It is not a weakly prime, because it can be changed into another prime (51282821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25641405 + 25641406.

It is an arithmetic number, because the mean of its divisors is an integer number (25641406).

Almost surely, 2^51282811 is an apocalyptic number.

51282811 is a deficient number, since it is larger than the sum of its proper divisors (1).

51282811 is an equidigital number, since it uses as much as digits as its factorization.

51282811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 28.

The square root of 51282811 is about 7161.2017846169. The cubic root of 51282811 is about 371.5271939648.

The spelling of 51282811 in words is "fifty-one million, two hundred eighty-two thousand, eight hundred eleven".