1566216054 has 32 divisors (see below), whose sum is σ = 3748211040. Its totient is φ = 481912416.

The previous prime is 1566216019. The next prime is 1566216083. The reversal of 1566216054 is 4506126651.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114837 + ... + 1116240.

It is an arithmetic number, because the mean of its divisors is an integer number (117131595).

Almost surely, 2^1566216054 is an apocalyptic number.

1566216054 is an abundant number, since it is smaller than the sum of its proper divisors (2181994986).

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

1566216054 is a wasteful number, since it uses less digits than its factorization.

1566216054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231101 (or 2231095 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1566216054 is about 39575.4476159146. The cubic root of 1566216054 is about 1161.3163944823.

The spelling of 1566216054 in words is "one billion, five hundred sixty-six million, two hundred sixteen thousand, fifty-four".