53566261 has 12 divisors (see below), whose sum is σ = 63763392. Its totient is φ = 44844408.

The previous prime is 53566237. The next prime is 53566297. The reversal of 53566261 is 16266535.

It is not a de Polignac number, because 53566261 - 2¹¹ = 53564213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53566211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10605 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (5313616).

Almost surely, 2^53566261 is an apocalyptic number.

It is an amenable number.

53566261 is a deficient number, since it is larger than the sum of its proper divisors (10197131).

53566261 is a wasteful number, since it uses less digits than its factorization.

53566261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25480 (or 25473 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 53566261 is about 7318.8975262672. The cubic root of 53566261 is about 376.9615990456.

The spelling of 53566261 in words is "fifty-three million, five hundred sixty-six thousand, two hundred sixty-one".