65551047 has 8 divisors (see below), whose sum is σ = 87448944. Its totient is φ = 43676928.

The previous prime is 65551043. The next prime is 65551061. The reversal of 65551047 is 74015556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65551047 - 2² = 65551043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65550999 and 65551017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65551043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 11625.

It is an arithmetic number, because the mean of its divisors is an integer number (10931118).

Almost surely, 2^65551047 is an apocalyptic number.

65551047 is a deficient number, since it is larger than the sum of its proper divisors (21897897).

65551047 is a wasteful number, since it uses less digits than its factorization.

65551047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11889.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 65551047 is about 8096.3601080980. The cubic root of 65551047 is about 403.2055897771.

The spelling of 65551047 in words is "sixty-five million, five hundred fifty-one thousand, forty-seven".