55712198 has 4 divisors (see below), whose sum is σ = 83568300. Its totient is φ = 27856098.

The previous prime is 55712197. The next prime is 55712227. The reversal of 55712198 is 89121755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89121755 = 5 ⋅17824351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55712197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13928048 + ... + 13928051.

It is an arithmetic number, because the mean of its divisors is an integer number (20892075).

Almost surely, 2^55712198 is an apocalyptic number.

55712198 is a deficient number, since it is larger than the sum of its proper divisors (27856102).

55712198 is a wasteful number, since it uses less digits than its factorization.

55712198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27856101.

The product of its digits is 25200, while the sum is 38.

The square root of 55712198 is about 7464.0604231209. The cubic root of 55712198 is about 381.9296993335.

The spelling of 55712198 in words is "fifty-five million, seven hundred twelve thousand, one hundred ninety-eight".