53466561 has 24 divisors (see below), whose sum is σ = 81425344. Its totient is φ = 35050320.

The previous prime is 53466557. The next prime is 53466563. The reversal of 53466561 is 16566435.

53466561 is a `hidden beast` number, since 5 + 34 + 66 + 561 = 666.

It is not a de Polignac number, because 53466561 - 2² = 53466557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53466563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13020 + ... + 16626.

Almost surely, 2^53466561 is an apocalyptic number.

It is an amenable number.

53466561 is a deficient number, since it is larger than the sum of its proper divisors (27958783).

53466561 is an equidigital number, since it uses as much as digits as its factorization.

53466561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683 (or 3671 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 53466561 is about 7312.0832188919. The cubic root of 53466561 is about 376.7275810152.

The spelling of 53466561 in words is "fifty-three million, four hundred sixty-six thousand, five hundred sixty-one".