55408417 has 8 divisors (see below), whose sum is σ = 56123496. Its totient is φ = 54698112.

The previous prime is 55408411. The next prime is 55408453. The reversal of 55408417 is 71480455.

It can be written as a sum of positive squares in 4 ways, for example, as 26635921 + 28772496 = 5161^2 + 5364^2 .

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 55408417 - 2¹⁹ = 54884129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55408411) 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, 25963 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (7015437).

Almost surely, 2^55408417 is an apocalyptic number.

It is an amenable number.

55408417 is a deficient number, since it is larger than the sum of its proper divisors (715079).

55408417 is a wasteful number, since it uses less digits than its factorization.

55408417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 55408417 is about 7443.6830265669. The cubic root of 55408417 is about 381.2342531524.

The spelling of 55408417 in words is "fifty-five million, four hundred eight thousand, four hundred seventeen".