54731198809 has 27 divisors (see below), whose sum is σ = 67232378997. Its totient is φ = 44418113208.

The previous prime is 54731198801. The next prime is 54731198827. The reversal of 54731198809 is 90889113745.

It is a happy number.

The square root of 54731198809 is 233947.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 54731198809 - 2³ = 54731198801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54731198809.

It is not an unprimeable number, because it can be changed into a prime (54731198801) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31114072 + ... + 31115830.

It is an arithmetic number, because the mean of its divisors is an integer number (2490088111).

Almost surely, 2^54731198809 is an apocalyptic number.

54731198809 is the 233947-th square number.

54731198809 is the 116974-th centered octagonal number.

It is an amenable number.

54731198809 is a deficient number, since it is larger than the sum of its proper divisors (12501180188).

54731198809 is an frugal number, since it uses more digits than its factorization.

54731198809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 54731198809 in words is "fifty-four billion, seven hundred thirty-one million, one hundred ninety-eight thousand, eight hundred nine".