54505639 has 8 divisors (see below), whose sum is σ = 56608640. Its totient is φ = 52440696.

The previous prime is 54505637. The next prime is 54505681. The reversal of 54505639 is 93650545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54505639 - 2¹ = 54505637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54505598 and 54505607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54505637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6579 + ... + 12340.

It is an arithmetic number, because the mean of its divisors is an integer number (7076080).

Almost surely, 2^54505639 is an apocalyptic number.

54505639 is a deficient number, since it is larger than the sum of its proper divisors (2103001).

54505639 is a wasteful number, since it uses less digits than its factorization.

54505639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19029.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 54505639 is about 7382.7934415098. The cubic root of 54505639 is about 379.1524021415.

The spelling of 54505639 in words is "fifty-four million, five hundred five thousand, six hundred thirty-nine".