55505427 has 8 divisors (see below), whose sum is σ = 74072016. Its totient is φ = 36971232.

The previous prime is 55505419. The next prime is 55505491. The reversal of 55505427 is 72450555.

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

It is not a de Polignac number, because 55505427 - 2³ = 55505419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55505497) 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, 3768 + ... + 11189.

It is an arithmetic number, because the mean of its divisors is an integer number (9259002).

Almost surely, 2^55505427 is an apocalyptic number.

55505427 is a deficient number, since it is larger than the sum of its proper divisors (18566589).

55505427 is a wasteful number, since it uses less digits than its factorization.

55505427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16197.

The product of its (nonzero) digits is 35000, while the sum is 33.

The square root of 55505427 is about 7450.1964403632. The cubic root of 55505427 is about 381.4566139059.

The spelling of 55505427 in words is "fifty-five million, five hundred five thousand, four hundred twenty-seven".