55889247 has 4 divisors (see below), whose sum is σ = 74519000. Its totient is φ = 37259496.

The previous prime is 55889243. The next prime is 55889269. The reversal of 55889247 is 74298855.

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

It is not a de Polignac number, because 55889247 - 2² = 55889243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55889196 and 55889205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55889243) 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, 9314872 + ... + 9314877.

It is an arithmetic number, because the mean of its divisors is an integer number (18629750).

Almost surely, 2^55889247 is an apocalyptic number.

55889247 is a deficient number, since it is larger than the sum of its proper divisors (18629753).

55889247 is a wasteful number, since it uses less digits than its factorization.

55889247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18629752.

The product of its digits is 806400, while the sum is 48.

The square root of 55889247 is about 7475.9111150414. The cubic root of 55889247 is about 382.3338523994. Note that the first 3 decimals are identical.

The spelling of 55889247 in words is "fifty-five million, eight hundred eighty-nine thousand, two hundred forty-seven".