55389272 has 16 divisors (see below), whose sum is σ = 104674560. Its totient is φ = 27476064.

The previous prime is 55389241. The next prime is 55389277. The reversal of 55389272 is 27298355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55389277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26243 + ... + 28274.

It is an arithmetic number, because the mean of its divisors is an integer number (6542160).

Almost surely, 2^55389272 is an apocalyptic number.

It is an amenable number.

55389272 is a deficient number, since it is larger than the sum of its proper divisors (49285288).

55389272 is a wasteful number, since it uses less digits than its factorization.

55389272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54650 (or 54646 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 55389272 is about 7442.3969257223. The cubic root of 55389272 is about 381.1903394237.

The spelling of 55389272 in words is "fifty-five million, three hundred eighty-nine thousand, two hundred seventy-two".