54199099249 has 9 divisors (see below), whose sum is σ = 57206488203. Its totient is φ = 51342324552.

The previous prime is 54199099223. The next prime is 54199099261. The reversal of 54199099249 is 94299099145.

The square root of 54199099249 is 232807.

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

It can be written as a sum of positive squares in only one way, i.e., 26420877025 + 27778222224 = 162545^2 + 166668^2 .

It is not a de Polignac number, because 54199099249 - 2⁷ = 54199099121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54199099289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4417207 + ... + 4429459.

It is an arithmetic number, because the mean of its divisors is an integer number (6356276467).

Almost surely, 2^54199099249 is an apocalyptic number.

54199099249 is the 232807-th square number.

54199099249 is the 116404-th centered octagonal number.

It is an amenable number.

54199099249 is a deficient number, since it is larger than the sum of its proper divisors (3007388954).

54199099249 is an frugal number, since it uses more digits than its factorization.

54199099249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24544 (or 12272 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 61.

The spelling of 54199099249 in words is "fifty-four billion, one hundred ninety-nine million, ninety-nine thousand, two hundred forty-nine".