54840521 has 8 divisors (see below), whose sum is σ = 58154400. Its totient is φ = 51536448.

The previous prime is 54840509. The next prime is 54840529. The reversal of 54840521 is 12504845.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54840521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54840529) 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, 11330 + ... + 15428.

It is an arithmetic number, because the mean of its divisors is an integer number (7269300).

Almost surely, 2^54840521 is an apocalyptic number.

It is an amenable number.

54840521 is a deficient number, since it is larger than the sum of its proper divisors (3313879).

54840521 is a wasteful number, since it uses less digits than its factorization.

54840521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 54840521 is about 7405.4386095626. The cubic root of 54840521 is about 379.9273198949.

The spelling of 54840521 in words is "fifty-four million, eight hundred forty thousand, five hundred twenty-one".