55581335 has 8 divisors (see below), whose sum is σ = 67207536. Its totient is φ = 44125120.

The previous prime is 55581293. The next prime is 55581349. The reversal of 55581335 is 53318555.

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

It is a de Polignac number, because none of the positive numbers 2^k-55581335 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55581295 and 55581304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41774 + ... + 43083.

It is an arithmetic number, because the mean of its divisors is an integer number (8400942).

Almost surely, 2^55581335 is an apocalyptic number.

55581335 is a deficient number, since it is larger than the sum of its proper divisors (11626201).

55581335 is a wasteful number, since it uses less digits than its factorization.

55581335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84993.

The product of its digits is 45000, while the sum is 35.

The square root of 55581335 is about 7455.2890621357. The cubic root of 55581335 is about 381.6304252522.

The spelling of 55581335 in words is "fifty-five million, five hundred eighty-one thousand, three hundred thirty-five".