55418439 has 8 divisors (see below), whose sum is σ = 75102832. Its totient is φ = 36339840.

The previous prime is 55418437. The next prime is 55418479. The reversal of 55418439 is 93481455.

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

It is not a de Polignac number, because 55418439 - 2¹ = 55418437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55418397 and 55418406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55418437) 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, 151234 + ... + 151599.

It is an arithmetic number, because the mean of its divisors is an integer number (9387854).

Almost surely, 2^55418439 is an apocalyptic number.

55418439 is a deficient number, since it is larger than the sum of its proper divisors (19684393).

55418439 is a wasteful number, since it uses less digits than its factorization.

55418439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302897.

The product of its digits is 86400, while the sum is 39.

The square root of 55418439 is about 7444.3561843856. The cubic root of 55418439 is about 381.2572370211.

The spelling of 55418439 in words is "fifty-five million, four hundred eighteen thousand, four hundred thirty-nine".