51120701 has 2 divisors, whose sum is σ = 51120702. Its totient is φ = 51120700.

The previous prime is 51120689. The next prime is 51120731. The reversal of 51120701 is 10702115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47623801 + 3496900 = 6901^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 51120701 - 2¹⁸ = 50858557 is a prime.

It is a super-2 number, since 2×51120701² = 5226652141462802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51120701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51120731) 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, 25560350 + 25560351.

It is an arithmetic number, because the mean of its divisors is an integer number (25560351).

Almost surely, 2^51120701 is an apocalyptic number.

It is an amenable number.

51120701 is a deficient number, since it is larger than the sum of its proper divisors (1).

51120701 is an equidigital number, since it uses as much as digits as its factorization.

51120701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 51120701 is about 7149.8741946974. The cubic root of 51120701 is about 371.1353027611.

Adding to 51120701 its reverse (10702115), we get a palindrome (61822816).

It can be divided in two parts, 511 and 20701, that added together give a palindrome (21212).

The spelling of 51120701 in words is "fifty-one million, one hundred twenty thousand, seven hundred one".