55478159 has 8 divisors (see below), whose sum is σ = 60873552. Its totient is φ = 50141440.

The previous prime is 55478153. The next prime is 55478161. The reversal of 55478159 is 95187455.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55478159 is a prime.

It is a super-2 number, since 2×55478159² = 6155652252058562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55478153) 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, 12674 + ... + 16479.

It is an arithmetic number, because the mean of its divisors is an integer number (7609194).

Almost surely, 2^55478159 is an apocalyptic number.

55478159 is a deficient number, since it is larger than the sum of its proper divisors (5395393).

55478159 is a wasteful number, since it uses less digits than its factorization.

55478159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29337.

The product of its digits is 252000, while the sum is 44.

The square root of 55478159 is about 7448.3661966904. The cubic root of 55478159 is about 381.3941379566.

The spelling of 55478159 in words is "fifty-five million, four hundred seventy-eight thousand, one hundred fifty-nine".