55248891 has 8 divisors (see below), whose sum is σ = 74380800. Its totient is φ = 36474792.

The previous prime is 55248889. The next prime is 55248901. The reversal of 55248891 is 19884255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55248891 - 2¹ = 55248889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55248811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89091 + ... + 89708.

It is an arithmetic number, because the mean of its divisors is an integer number (9297600).

Almost surely, 2^55248891 is an apocalyptic number.

55248891 is a deficient number, since it is larger than the sum of its proper divisors (19131909).

55248891 is a wasteful number, since it uses less digits than its factorization.

55248891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178905.

The product of its digits is 115200, while the sum is 42.

The square root of 55248891 is about 7432.9597738720. The cubic root of 55248891 is about 380.8680318090.

The spelling of 55248891 in words is "fifty-five million, two hundred forty-eight thousand, eight hundred ninety-one".