54533640 has 64 divisors (see below), whose sum is σ = 186975360. Its totient is φ = 12464640.

The previous prime is 54533639. The next prime is 54533651. The reversal of 54533640 is 4633545.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 54533598 and 54533607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31621 + ... + 33300.

It is an arithmetic number, because the mean of its divisors is an integer number (2921490).

Almost surely, 2^54533640 is an apocalyptic number.

It is an amenable number.

54533640 is an abundant number, since it is smaller than the sum of its proper divisors (132441720).

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

54533640 is a wasteful number, since it uses less digits than its factorization.

54533640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64942 (or 64938 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 54533640 is about 7384.6895669351. The cubic root of 54533640 is about 379.2173179258.

The spelling of 54533640 in words is "fifty-four million, five hundred thirty-three thousand, six hundred forty".