54663638 has 4 divisors (see below), whose sum is σ = 81995460. Its totient is φ = 27331818.

The previous prime is 54663613. The next prime is 54663649. The reversal of 54663638 is 83636645.

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

It is a super-2 number, since 2×54663638² = 5976226638790088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54663595 and 54663604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13665908 + ... + 13665911.

It is an arithmetic number, because the mean of its divisors is an integer number (20498865).

Almost surely, 2^54663638 is an apocalyptic number.

54663638 is a deficient number, since it is larger than the sum of its proper divisors (27331822).

54663638 is a wasteful number, since it uses less digits than its factorization.

54663638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27331821.

The product of its digits is 311040, while the sum is 41.

The square root of 54663638 is about 7393.4861871785. The cubic root of 54663638 is about 379.5184065303.

The spelling of 54663638 in words is "fifty-four million, six hundred sixty-three thousand, six hundred thirty-eight".