51445573 has 2 divisors, whose sum is σ = 51445574. Its totient is φ = 51445572.

The previous prime is 51445567. The next prime is 51445579. The reversal of 51445573 is 37554415.

It is a balanced prime because it is at equal distance from previous prime (51445567) and next prime (51445579).

It can be written as a sum of positive squares in only one way, i.e., 44649124 + 6796449 = 6682^2 + 2607^2 .

It is a cyclic number.

It is not a de Polignac number, because 51445573 - 2²¹ = 49348421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51445579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25722786 + 25722787.

It is an arithmetic number, because the mean of its divisors is an integer number (25722787).

Almost surely, 2^51445573 is an apocalyptic number.

It is an amenable number.

51445573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51445573 is an equidigital number, since it uses as much as digits as its factorization.

51445573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 34.

The square root of 51445573 is about 7172.5569359887. The cubic root of 51445573 is about 371.9198313581.

Adding to 51445573 its reverse (37554415), we get a palindrome (88999988).

The spelling of 51445573 in words is "fifty-one million, four hundred forty-five thousand, five hundred seventy-three".