53553261 has 8 divisors (see below), whose sum is σ = 71659584. Its totient is φ = 35574560.

The previous prime is 53553217. The next prime is 53553271. The reversal of 53553261 is 16235535.

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 53553261 - 2⁶ = 53553197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53553271) 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, 30921 + ... + 32606.

It is an arithmetic number, because the mean of its divisors is an integer number (8957448).

Almost surely, 2^53553261 is an apocalyptic number.

It is an amenable number.

53553261 is a deficient number, since it is larger than the sum of its proper divisors (18106323).

53553261 is a wasteful number, since it uses less digits than its factorization.

53553261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63811.

The product of its digits is 13500, while the sum is 30.

The square root of 53553261 is about 7318.0093604750. The cubic root of 53553261 is about 376.9311016318.

Adding to 53553261 its reverse (16235535), we get a palindrome (69788796).

The spelling of 53553261 in words is "fifty-three million, five hundred fifty-three thousand, two hundred sixty-one".