55165647 has 8 divisors (see below), whose sum is σ = 75927040. Its totient is φ = 35590680.

The previous prime is 55165637. The next prime is 55165681. The reversal of 55165647 is 74656155.

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

It is not a de Polignac number, because 55165647 - 2²⁰ = 54117071 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 (55165637) 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, 296497 + ... + 296682.

It is an arithmetic number, because the mean of its divisors is an integer number (9490880).

Almost surely, 2^55165647 is an apocalyptic number.

55165647 is a deficient number, since it is larger than the sum of its proper divisors (20761393).

55165647 is a wasteful number, since it uses less digits than its factorization.

55165647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593213.

The product of its digits is 126000, while the sum is 39.

The square root of 55165647 is about 7427.3580094136. The cubic root of 55165647 is about 380.6766498970.

The spelling of 55165647 in words is "fifty-five million, one hundred sixty-five thousand, six hundred forty-seven".