55208428 has 18 divisors (see below), whose sum is σ = 106197308. Its totient is φ = 25094520.

The previous prime is 55208411. The next prime is 55208429. The reversal of 55208428 is 82480255.

It is a junction number, because it is equal to n+sod(n) for n = 55208393 and 55208402.

It is not an unprimeable number, because it can be changed into a prime (55208429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56550 + ... + 57517.

Almost surely, 2^55208428 is an apocalyptic number.

It is an amenable number.

55208428 is a deficient number, since it is larger than the sum of its proper divisors (50988880).

55208428 is a wasteful number, since it uses less digits than its factorization.

55208428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114093 (or 114080 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 55208428 is about 7430.2374120885. The cubic root of 55208428 is about 380.7750294780.

The spelling of 55208428 in words is "fifty-five million, two hundred eight thousand, four hundred twenty-eight".