51984497 has 2 divisors, whose sum is σ = 51984498. Its totient is φ = 51984496.

The previous prime is 51984479. The next prime is 51984503. The reversal of 51984497 is 79448915.

Together with previous prime (51984479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 776161 = 7156^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 51984497 - 2¹⁴ = 51968113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51984197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25992248 + 25992249.

It is an arithmetic number, because the mean of its divisors is an integer number (25992249).

Almost surely, 2^51984497 is an apocalyptic number.

It is an amenable number.

51984497 is a deficient number, since it is larger than the sum of its proper divisors (1).

51984497 is an equidigital number, since it uses as much as digits as its factorization.

51984497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 51984497 is about 7210.0275311541. The cubic root of 51984497 is about 373.2140189689.

The spelling of 51984497 in words is "fifty-one million, nine hundred eighty-four thousand, four hundred ninety-seven".