51614561 has 2 divisors, whose sum is σ = 51614562. Its totient is φ = 51614560.

The previous prime is 51614551. The next prime is 51614581. The reversal of 51614561 is 16541615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46840336 + 4774225 = 6844^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 51614561 - 2¹⁰ = 51613537 is a prime.

It is not a weakly prime, because it can be changed into another prime (51614551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25807280 + 25807281.

It is an arithmetic number, because the mean of its divisors is an integer number (25807281).

Almost surely, 2^51614561 is an apocalyptic number.

It is an amenable number.

51614561 is a deficient number, since it is larger than the sum of its proper divisors (1).

51614561 is an equidigital number, since it uses as much as digits as its factorization.

51614561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 51614561 is about 7184.3274563455. The cubic root of 51614561 is about 372.3266126983.

The spelling of 51614561 in words is "fifty-one million, six hundred fourteen thousand, five hundred sixty-one".