51161573 has 2 divisors, whose sum is σ = 51161574. Its totient is φ = 51161572.

The previous prime is 51161557. The next prime is 51161587. The reversal of 51161573 is 37516115.

51161573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50452609 + 708964 = 7103^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 51161573 - 2⁴ = 51161557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51161503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580786 + 25580787.

It is an arithmetic number, because the mean of its divisors is an integer number (25580787).

Almost surely, 2^51161573 is an apocalyptic number.

It is an amenable number.

51161573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51161573 is an equidigital number, since it uses as much as digits as its factorization.

51161573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 29.

The square root of 51161573 is about 7152.7318557318. The cubic root of 51161573 is about 371.2341863897.

Adding to 51161573 its reverse (37516115), we get a palindrome (88677688).

The spelling of 51161573 in words is "fifty-one million, one hundred sixty-one thousand, five hundred seventy-three".