55159247 has 32 divisors (see below), whose sum is σ = 68705280. Its totient is φ = 43585920.

The previous prime is 55159229. The next prime is 55159283. The reversal of 55159247 is 74295155.

It is a happy number.

It is not a de Polignac number, because 55159247 - 2¹² = 55155151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55159247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55159217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194768 + ... + 195050.

It is an arithmetic number, because the mean of its divisors is an integer number (2147040).

Almost surely, 2^55159247 is an apocalyptic number.

55159247 is a deficient number, since it is larger than the sum of its proper divisors (13546033).

55159247 is a wasteful number, since it uses less digits than its factorization.

55159247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383.

The product of its digits is 63000, while the sum is 38.

The square root of 55159247 is about 7426.9271573108. The cubic root of 55159247 is about 380.6619280250.

The spelling of 55159247 in words is "fifty-five million, one hundred fifty-nine thousand, two hundred forty-seven".