65457261 has 16 divisors (see below), whose sum is σ = 102078400. Its totient is φ = 41341104.

The previous prime is 65457253. The next prime is 65457289. The reversal of 65457261 is 16275456.

It is a happy number.

It is not a de Polignac number, because 65457261 - 2³ = 65457253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65457211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63286 + ... + 64311.

It is an arithmetic number, because the mean of its divisors is an integer number (6379900).

Almost surely, 2^65457261 is an apocalyptic number.

It is an amenable number.

65457261 is a deficient number, since it is larger than the sum of its proper divisors (36621139).

65457261 is a wasteful number, since it uses less digits than its factorization.

65457261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127625 (or 127619 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65457261 is about 8090.5661730190. The cubic root of 65457261 is about 403.0132049110.

The spelling of 65457261 in words is "sixty-five million, four hundred fifty-seven thousand, two hundred sixty-one".