54520661 has 16 divisors (see below), whose sum is σ = 61662720. Its totient is φ = 47856960.

The previous prime is 54520643. The next prime is 54520663. The reversal of 54520661 is 16602545.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54520661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22631 + ... + 24923.

It is an arithmetic number, because the mean of its divisors is an integer number (3853920).

Almost surely, 2^54520661 is an apocalyptic number.

It is an amenable number.

54520661 is a deficient number, since it is larger than the sum of its proper divisors (7142059).

54520661 is a wasteful number, since it uses less digits than its factorization.

54520661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 54520661 is about 7383.8107370111. The cubic root of 54520661 is about 379.1872309796.

The spelling of 54520661 in words is "fifty-four million, five hundred twenty thousand, six hundred sixty-one".