54979838 has 4 divisors (see below), whose sum is σ = 82469760. Its totient is φ = 27489918.

The previous prime is 54979831. The next prime is 54979879. The reversal of 54979838 is 83897945.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54979838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54979831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13744958 + ... + 13744961.

It is an arithmetic number, because the mean of its divisors is an integer number (20617440).

Almost surely, 2^54979838 is an apocalyptic number.

54979838 is a deficient number, since it is larger than the sum of its proper divisors (27489922).

54979838 is a wasteful number, since it uses less digits than its factorization.

54979838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27489921.

The product of its digits is 2177280, while the sum is 53.

The square root of 54979838 is about 7414.8390407345. The cubic root of 54979838 is about 380.2487706224.

The spelling of 54979838 in words is "fifty-four million, nine hundred seventy-nine thousand, eight hundred thirty-eight".