55408159 has 4 divisors (see below), whose sum is σ = 56587104. Its totient is φ = 54229216.

The previous prime is 55408147. The next prime is 55408169. The reversal of 55408159 is 95180455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55408159 - 2⁹ = 55407647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55408109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589402 + ... + 589495.

It is an arithmetic number, because the mean of its divisors is an integer number (14146776).

Almost surely, 2^55408159 is an apocalyptic number.

55408159 is a deficient number, since it is larger than the sum of its proper divisors (1178945).

55408159 is a wasteful number, since it uses less digits than its factorization.

55408159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178944.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 55408159 is about 7443.6656964160. The cubic root of 55408159 is about 381.2336614337.

The spelling of 55408159 in words is "fifty-five million, four hundred eight thousand, one hundred fifty-nine".