54163640 has 32 divisors (see below), whose sum is σ = 122176080. Its totient is φ = 21610752.

The previous prime is 54163639. The next prime is 54163657. The reversal of 54163640 is 4636145.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16799 + ... + 19761.

Almost surely, 2^54163640 is an apocalyptic number.

It is an amenable number.

54163640 is an abundant number, since it is smaller than the sum of its proper divisors (68012440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54163640 is a wasteful number, since it uses less digits than its factorization.

54163640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3427 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 54163640 is about 7359.5950975580. The cubic root of 54163640 is about 378.3577326904.

Adding to 54163640 its reverse (4636145), we get a palindrome (58799785).

The spelling of 54163640 in words is "fifty-four million, one hundred sixty-three thousand, six hundred forty".