55071568 has 40 divisors (see below), whose sum is σ = 117903168. Its totient is φ = 24786432.

The previous prime is 55071559. The next prime is 55071571. The reversal of 55071568 is 86517055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855 + ... + 10657.

Almost surely, 2^55071568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55071568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58951584).

55071568 is an abundant number, since it is smaller than the sum of its proper divisors (62831600).

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

55071568 is a wasteful number, since it uses less digits than its factorization.

55071568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851 (or 8845 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 55071568 is about 7421.0220320384. The cubic root of 55071568 is about 380.4601259153.

The spelling of 55071568 in words is "fifty-five million, seventy-one thousand, five hundred sixty-eight".