55018407 has 8 divisors (see below), whose sum is σ = 73459584. Its totient is φ = 36628088.

The previous prime is 55018393. The next prime is 55018417. The reversal of 55018407 is 70481055.

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 55018407 - 2⁶ = 55018343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55018417) 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, 10113 + ... + 14570.

It is an arithmetic number, because the mean of its divisors is an integer number (9182448).

Almost surely, 2^55018407 is an apocalyptic number.

55018407 is a deficient number, since it is larger than the sum of its proper divisors (18441177).

55018407 is a wasteful number, since it uses less digits than its factorization.

55018407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25429.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55018407 is about 7417.4393829677. The cubic root of 55018407 is about 380.3376661599.

The spelling of 55018407 in words is "fifty-five million, eighteen thousand, four hundred seven".