55871722 has 12 divisors (see below), whose sum is σ = 84565350. Its totient is φ = 27684288.

The previous prime is 55871701. The next prime is 55871729. The reversal of 55871722 is 22717855.

It can be written as a sum of positive squares in 3 ways, for example, as 13608721 + 42263001 = 3689^2 + 6501^2 .

It is not an unprimeable number, because it can be changed into a prime (55871729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128818 + ... + 129250.

Almost surely, 2^55871722 is an apocalyptic number.

55871722 is a deficient number, since it is larger than the sum of its proper divisors (28693628).

55871722 is an equidigital number, since it uses as much as digits as its factorization.

55871722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 584 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 55871722 is about 7474.7389252067. The cubic root of 55871722 is about 382.2938858490.

The spelling of 55871722 in words is "fifty-five million, eight hundred seventy-one thousand, seven hundred twenty-two".