54198639 has 40 divisors (see below), whose sum is σ = 89907840. Its totient is φ = 32259600.

The previous prime is 54198629. The next prime is 54198643. The reversal of 54198639 is 93689145.

It is a happy number.

54198639 is a `hidden beast` number, since 5 + 4 + 1 + 9 + 8 + 639 = 666.

It is not a de Polignac number, because 54198639 - 2⁴ = 54198623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54198594 and 54198603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54198629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52054 + ... + 53084.

It is an arithmetic number, because the mean of its divisors is an integer number (2247696).

Almost surely, 2^54198639 is an apocalyptic number.

54198639 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

54198639 is a deficient number, since it is larger than the sum of its proper divisors (35709201).

54198639 is a wasteful number, since it uses less digits than its factorization.

54198639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1104 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 54198639 is about 7361.9724938361. The cubic root of 54198639 is about 378.4392098036.

The spelling of 54198639 in words is "fifty-four million, one hundred ninety-eight thousand, six hundred thirty-nine".