55555238 has 8 divisors (see below), whose sum is σ = 83473320. Its totient is φ = 27730800.

The previous prime is 55555237. The next prime is 55555267. The reversal of 55555238 is 83255555.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555231) 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, 21908 + ... + 24311.

It is an arithmetic number, because the mean of its divisors is an integer number (10434165).

Almost surely, 2^55555238 is an apocalyptic number.

55555238 is a deficient number, since it is larger than the sum of its proper divisors (27918082).

55555238 is a wasteful number, since it uses less digits than its factorization.

55555238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46822.

The product of its digits is 150000, while the sum is 38.

The square root of 55555238 is about 7453.5386226946. The cubic root of 55555238 is about 381.5706871623.

The spelling of 55555238 in words is "fifty-five million, five hundred fifty-five thousand, two hundred thirty-eight".