51011573 has 2 divisors, whose sum is σ = 51011574. Its totient is φ = 51011572.

The previous prime is 51011557. The next prime is 51011603. The reversal of 51011573 is 37511015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 23059204 = 5287^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 51011573 - 2⁴ = 51011557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51011533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505786 + 25505787.

It is an arithmetic number, because the mean of its divisors is an integer number (25505787).

Almost surely, 2^51011573 is an apocalyptic number.

It is an amenable number.

51011573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011573 is an equidigital number, since it uses as much as digits as its factorization.

51011573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 51011573 is about 7142.2386546516. The cubic root of 51011573 is about 370.8710255618.

Adding to 51011573 its reverse (37511015), we get a palindrome (88522588).

The spelling of 51011573 in words is "fifty-one million, eleven thousand, five hundred seventy-three".