65855249 has 4 divisors (see below), whose sum is σ = 65881200. Its totient is φ = 65829300.

The previous prime is 65855219. The next prime is 65855261. The reversal of 65855249 is 94255856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65855249 - 2⁸ = 65854993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65855219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8699 + ... + 14400.

It is an arithmetic number, because the mean of its divisors is an integer number (16470300).

Almost surely, 2^65855249 is an apocalyptic number.

It is an amenable number.

65855249 is a deficient number, since it is larger than the sum of its proper divisors (25951).

65855249 is a wasteful number, since it uses less digits than its factorization.

65855249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950.

The product of its digits is 432000, while the sum is 44.

The square root of 65855249 is about 8115.1247063739. The cubic root of 65855249 is about 403.8283446329.

The spelling of 65855249 in words is "sixty-five million, eight hundred fifty-five thousand, two hundred forty-nine".