53523261 has 60 divisors (see below), whose sum is σ = 90635776. Its totient is φ = 31434480.

The previous prime is 53523227. The next prime is 53523287. The reversal of 53523261 is 16232535.

It is not a de Polignac number, because 53523261 - 2¹³ = 53515069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53523221) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 421380 + ... + 421506.

Almost surely, 2^53523261 is an apocalyptic number.

It is an amenable number.

53523261 is a deficient number, since it is larger than the sum of its proper divisors (37112515).

53523261 is a wasteful number, since it uses less digits than its factorization.

53523261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 184 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 53523261 is about 7315.9593355896. The cubic root of 53523261 is about 376.8607041433.

Adding to 53523261 its reverse (16232535), we get a palindrome (69755796).

The spelling of 53523261 in words is "fifty-three million, five hundred twenty-three thousand, two hundred sixty-one".