53056561 has 8 divisors (see below), whose sum is σ = 56542464. Its totient is φ = 49668960.

The previous prime is 53056547. The next prime is 53056567. The reversal of 53056561 is 16565035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53056561 - 2²⁵ = 19502129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53056567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23460 + ... + 25621.

It is an arithmetic number, because the mean of its divisors is an integer number (7067808).

Almost surely, 2^53056561 is an apocalyptic number.

It is an amenable number.

53056561 is a deficient number, since it is larger than the sum of its proper divisors (3485903).

53056561 is a wasteful number, since it uses less digits than its factorization.

53056561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49151.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 53056561 is about 7283.9934788549. The cubic root of 53056561 is about 375.7621501047.

The spelling of 53056561 in words is "fifty-three million, fifty-six thousand, five hundred sixty-one".