51653447 has 2 divisors, whose sum is σ = 51653448. Its totient is φ = 51653446.

The previous prime is 51653417. The next prime is 51653453. The reversal of 51653447 is 74435615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51653447 - 2¹⁰ = 51652423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51653417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25826723 + 25826724.

It is an arithmetic number, because the mean of its divisors is an integer number (25826724).

Almost surely, 2^51653447 is an apocalyptic number.

51653447 is a deficient number, since it is larger than the sum of its proper divisors (1).

51653447 is an equidigital number, since it uses as much as digits as its factorization.

51653447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 51653447 is about 7187.0332544103. The cubic root of 51653447 is about 372.4200918636.

The spelling of 51653447 in words is "fifty-one million, six hundred fifty-three thousand, four hundred forty-seven".