55149238 has 8 divisors (see below), whose sum is σ = 83095488. Its totient is φ = 27450744.

The previous prime is 55149209. The next prime is 55149251. The reversal of 55149238 is 83294155.

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

It is a junction number, because it is equal to n+sod(n) for n = 55149197 and 55149206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61381 + ... + 62272.

It is an arithmetic number, because the mean of its divisors is an integer number (10386936).

Almost surely, 2^55149238 is an apocalyptic number.

55149238 is a deficient number, since it is larger than the sum of its proper divisors (27946250).

55149238 is a wasteful number, since it uses less digits than its factorization.

55149238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123878.

The product of its digits is 43200, while the sum is 37.

The square root of 55149238 is about 7426.2532948991. The cubic root of 55149238 is about 380.6389021142.

The spelling of 55149238 in words is "fifty-five million, one hundred forty-nine thousand, two hundred thirty-eight".