54399249 has 16 divisors (see below), whose sum is σ = 81426240. Its totient is φ = 35890560.

The previous prime is 54399197. The next prime is 54399271. The reversal of 54399249 is 94299345.

It is a happy number.

It is not a de Polignac number, because 54399249 - 2⁹ = 54398737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54399049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7767 + ... + 13004.

It is an arithmetic number, because the mean of its divisors is an integer number (5089140).

Almost surely, 2^54399249 is an apocalyptic number.

It is an amenable number.

54399249 is a deficient number, since it is larger than the sum of its proper divisors (27026991).

54399249 is a wasteful number, since it uses less digits than its factorization.

54399249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20877 (or 20871 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 54399249 is about 7375.5846547918. The cubic root of 54399249 is about 378.9055512427.

The spelling of 54399249 in words is "fifty-four million, three hundred ninety-nine thousand, two hundred forty-nine".