55061664 has 48 divisors (see below), whose sum is σ = 165187008. Its totient is φ = 15731712.

The previous prime is 55061663. The next prime is 55061683. The reversal of 55061664 is 46616055.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (55061663) 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, 40297 + ... + 41640.

It is an arithmetic number, because the mean of its divisors is an integer number (3441396).

Almost surely, 2^55061664 is an apocalyptic number.

It is an amenable number.

55061664 is an abundant number, since it is smaller than the sum of its proper divisors (110125344).

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

55061664 is a wasteful number, since it uses less digits than its factorization.

55061664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81957 (or 81949 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 55061664 is about 7420.3547085028. The cubic root of 55061664 is about 380.4373173946.

The spelling of 55061664 in words is "fifty-five million, sixty-one thousand, six hundred sixty-four".