51984641 has 2 divisors, whose sum is σ = 51984642. Its totient is φ = 51984640.

The previous prime is 51984533. The next prime is 51984683. The reversal of 51984641 is 14648915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51897616 + 87025 = 7204^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 51984641 - 2¹⁸ = 51722497 is a prime.

It is a super-3 number, since 3×51984641³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51984595 and 51984604.

It is not a weakly prime, because it can be changed into another prime (51984041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25992320 + 25992321.

It is an arithmetic number, because the mean of its divisors is an integer number (25992321).

Almost surely, 2^51984641 is an apocalyptic number.

It is an amenable number.

51984641 is a deficient number, since it is larger than the sum of its proper divisors (1).

51984641 is an equidigital number, since it uses as much as digits as its factorization.

51984641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 51984641 is about 7210.0375172394. The cubic root of 51984641 is about 373.2143635766.

It can be divided in two parts, 51984 and 641, that added together give a palindrome (52625).

The spelling of 51984641 in words is "fifty-one million, nine hundred eighty-four thousand, six hundred forty-one".