53986561 has 2 divisors, whose sum is σ = 53986562. Its totient is φ = 53986560.

The previous prime is 53986547. The next prime is 53986567. The reversal of 53986561 is 16568935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31708161 + 22278400 = 5631^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 53986561 - 2⁷ = 53986433 is a prime.

It is not a weakly prime, because it can be changed into another prime (53986567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26993280 + 26993281.

It is an arithmetic number, because the mean of its divisors is an integer number (26993281).

Almost surely, 2^53986561 is an apocalyptic number.

It is an amenable number.

53986561 is a deficient number, since it is larger than the sum of its proper divisors (1).

53986561 is an equidigital number, since it uses as much as digits as its factorization.

53986561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 53986561 is about 7347.5547633209. The cubic root of 53986561 is about 377.9449566651.

The spelling of 53986561 in words is "fifty-three million, nine hundred eighty-six thousand, five hundred sixty-one".