55206838 has 4 divisors (see below), whose sum is σ = 82810260. Its totient is φ = 27603418.

The previous prime is 55206829. The next prime is 55206839. The reversal of 55206838 is 83860255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83860255 = 5 ⋅16772051.

It is a junction number, because it is equal to n+sod(n) for n = 55206797 and 55206806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55206839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13801708 + ... + 13801711.

It is an arithmetic number, because the mean of its divisors is an integer number (20702565).

Almost surely, 2^55206838 is an apocalyptic number.

55206838 is a deficient number, since it is larger than the sum of its proper divisors (27603422).

55206838 is a wasteful number, since it uses less digits than its factorization.

55206838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27603421.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 55206838 is about 7430.1304160829. The cubic root of 55206838 is about 380.7713740089.

The spelling of 55206838 in words is "fifty-five million, two hundred six thousand, eight hundred thirty-eight".