51097471 has 2 divisors, whose sum is σ = 51097472. Its totient is φ = 51097470.

The previous prime is 51097381. The next prime is 51097489. The reversal of 51097471 is 17479015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51097471 - 2¹¹ = 51095423 is a prime.

It is a super-3 number, since 3×51097471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51091471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25548735 + 25548736.

It is an arithmetic number, because the mean of its divisors is an integer number (25548736).

Almost surely, 2^51097471 is an apocalyptic number.

51097471 is a deficient number, since it is larger than the sum of its proper divisors (1).

51097471 is an equidigital number, since it uses as much as digits as its factorization.

51097471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 51097471 is about 7148.2495059980. The cubic root of 51097471 is about 371.0790777932.

The spelling of 51097471 in words is "fifty-one million, ninety-seven thousand, four hundred seventy-one".