53506561 has 8 divisors (see below), whose sum is σ = 53951040. Its totient is φ = 53064432.

The previous prime is 53506553. The next prime is 53506567. The reversal of 53506561 is 16560535.

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

It is a cyclic number.

It is not a de Polignac number, because 53506561 - 2³ = 53506553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53506567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102046 + ... + 102568.

It is an arithmetic number, because the mean of its divisors is an integer number (6743880).

Almost surely, 2^53506561 is an apocalyptic number.

It is an amenable number.

53506561 is a deficient number, since it is larger than the sum of its proper divisors (444479).

53506561 is a wasteful number, since it uses less digits than its factorization.

53506561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

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

The square root of 53506561 is about 7314.8179061409. The cubic root of 53506561 is about 376.8215048100.

It can be divided in two parts, 5350 and 6561, that added together give a palindrome (11911).

The spelling of 53506561 in words is "fifty-three million, five hundred six thousand, five hundred sixty-one".