55005238 has 4 divisors (see below), whose sum is σ = 82507860. Its totient is φ = 27502618.

The previous prime is 55005229. The next prime is 55005239. The reversal of 55005238 is 83250055.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13751308 + ... + 13751311.

It is an arithmetic number, because the mean of its divisors is an integer number (20626965).

Almost surely, 2^55005238 is an apocalyptic number.

55005238 is a deficient number, since it is larger than the sum of its proper divisors (27502622).

55005238 is a wasteful number, since it uses less digits than its factorization.

55005238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27502621.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 55005238 is about 7416.5516245759. The cubic root of 55005238 is about 380.3073183384.

The spelling of 55005238 in words is "fifty-five million, five thousand, two hundred thirty-eight".