55981367 has 8 divisors (see below), whose sum is σ = 60445056. Its totient is φ = 51540192.

The previous prime is 55981363. The next prime is 55981421. The reversal of 55981367 is 76318955.

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

It is a cyclic number.

It is not a de Polignac number, because 55981367 - 2² = 55981363 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 (55981361) 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, 263 + ... + 10584.

It is an arithmetic number, because the mean of its divisors is an integer number (7555632).

Almost surely, 2^55981367 is an apocalyptic number.

55981367 is a deficient number, since it is larger than the sum of its proper divisors (4463689).

55981367 is a wasteful number, since it uses less digits than its factorization.

55981367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257.

The product of its digits is 226800, while the sum is 44.

The square root of 55981367 is about 7482.0697002902. The cubic root of 55981367 is about 382.5437989346.

The spelling of 55981367 in words is "fifty-five million, nine hundred eighty-one thousand, three hundred sixty-seven".