65212259 has 4 divisors (see below), whose sum is σ = 74528304. Its totient is φ = 55896216.

The previous prime is 65212253. The next prime is 65212307. The reversal of 65212259 is 95221256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65212259 - 2¹⁶ = 65146723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65212253) 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, 4658012 + ... + 4658025.

It is an arithmetic number, because the mean of its divisors is an integer number (18632076).

Almost surely, 2^65212259 is an apocalyptic number.

65212259 is a deficient number, since it is larger than the sum of its proper divisors (9316045).

65212259 is an equidigital number, since it uses as much as digits as its factorization.

65212259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316044.

The product of its digits is 10800, while the sum is 32.

The square root of 65212259 is about 8075.4107635463. The cubic root of 65212259 is about 402.5097594177.

The spelling of 65212259 in words is "sixty-five million, two hundred twelve thousand, two hundred fifty-nine".