51545471 has 2 divisors, whose sum is σ = 51545472. Its totient is φ = 51545470.

The previous prime is 51545449. The next prime is 51545491. The reversal of 51545471 is 17454515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51545471 - 2¹⁰ = 51544447 is a prime.

It is a super-3 number, since 3×51545471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51545491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772735 + 25772736.

It is an arithmetic number, because the mean of its divisors is an integer number (25772736).

Almost surely, 2^51545471 is an apocalyptic number.

51545471 is a deficient number, since it is larger than the sum of its proper divisors (1).

51545471 is an equidigital number, since it uses as much as digits as its factorization.

51545471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 32.

The square root of 51545471 is about 7179.5174628940. The cubic root of 51545471 is about 372.1604093919.

Adding to 51545471 its reverse (17454515), we get a palindrome (68999986).

The spelling of 51545471 in words is "fifty-one million, five hundred forty-five thousand, four hundred seventy-one".