65541261 has 12 divisors (see below), whose sum is σ = 88061568. Its totient is φ = 43359264.

The previous prime is 65541257. The next prime is 65541277. The reversal of 65541261 is 16214556.

It is not a de Polignac number, because 65541261 - 2² = 65541257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65541221) 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, 209241 + ... + 209553.

It is an arithmetic number, because the mean of its divisors is an integer number (7338464).

Almost surely, 2^65541261 is an apocalyptic number.

It is an amenable number.

65541261 is a deficient number, since it is larger than the sum of its proper divisors (22520307).

65541261 is an equidigital number, since it uses as much as digits as its factorization.

65541261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 539 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 65541261 is about 8095.7557398924. The cubic root of 65541261 is about 403.1855241618.

The spelling of 65541261 in words is "sixty-five million, five hundred forty-one thousand, two hundred sixty-one".