55238417 has 8 divisors (see below), whose sum is σ = 61539240. Its totient is φ = 49230720.

The previous prime is 55238399. The next prime is 55238419. The reversal of 55238417 is 71483255.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1201216 + 54037201 = 1096^2 + 7351^2 .

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 55238417 - 2⁶ = 55238353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55238419) 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, 72884 + ... + 73637.

It is an arithmetic number, because the mean of its divisors is an integer number (7692405).

Almost surely, 2^55238417 is an apocalyptic number.

It is an amenable number.

55238417 is a deficient number, since it is larger than the sum of its proper divisors (6300823).

55238417 is a wasteful number, since it uses less digits than its factorization.

55238417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146563.

The product of its digits is 33600, while the sum is 35.

The square root of 55238417 is about 7432.2551759207. The cubic root of 55238417 is about 380.8439621621.

It can be divided in two parts, 55238 and 417, that added together give a palindrome (55655).

The spelling of 55238417 in words is "fifty-five million, two hundred thirty-eight thousand, four hundred seventeen".