55368509 has 8 divisors (see below), whose sum is σ = 63325440. Its totient is φ = 47423376.

The previous prime is 55368499. The next prime is 55368557. The reversal of 55368509 is 90586355.

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

It is not a de Polignac number, because 55368509 - 2⁸ = 55368253 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 (55368559) 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, 12572 + ... + 16394.

It is an arithmetic number, because the mean of its divisors is an integer number (7915680).

Almost surely, 2^55368509 is an apocalyptic number.

It is an amenable number.

55368509 is a deficient number, since it is larger than the sum of its proper divisors (7956931).

55368509 is a wasteful number, since it uses less digits than its factorization.

55368509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 55368509 is about 7441.0018814673. The cubic root of 55368509 is about 381.1427029778.

The spelling of 55368509 in words is "fifty-five million, three hundred sixty-eight thousand, five hundred nine".