55004397 has 8 divisors (see below), whose sum is σ = 83816256. Its totient is φ = 31431072.

The previous prime is 55004363. The next prime is 55004399. The reversal of 55004397 is 79340055.

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

It is not a de Polignac number, because 55004397 - 2¹² = 55000301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55004399) 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, 1309608 + ... + 1309649.

It is an arithmetic number, because the mean of its divisors is an integer number (10477032).

Almost surely, 2^55004397 is an apocalyptic number.

It is an amenable number.

55004397 is a deficient number, since it is larger than the sum of its proper divisors (28811859).

55004397 is a wasteful number, since it uses less digits than its factorization.

55004397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619267.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 55004397 is about 7416.4949268506. The cubic root of 55004397 is about 380.3053800982.

The spelling of 55004397 in words is "fifty-five million, four thousand, three hundred ninety-seven".