55668722 has 16 divisors (see below), whose sum is σ = 85374744. Its totient is φ = 27216000.

The previous prime is 55668721. The next prime is 55668731. The reversal of 55668722 is 22786655.

It can be written as a sum of positive squares in 4 ways, for example, as 1366561 + 54302161 = 1169^2 + 7369^2 .

It is a super-2 number, since 2×55668722² = 6198013218226568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55668722.

It is not an unprimeable number, because it can be changed into a prime (55668721) 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, 20822 + ... + 23342.

Almost surely, 2^55668722 is an apocalyptic number.

55668722 is a deficient number, since it is larger than the sum of its proper divisors (29706022).

55668722 is a wasteful number, since it uses less digits than its factorization.

55668722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765.

The product of its digits is 201600, while the sum is 41.

The square root of 55668722 is about 7461.1474988771. The cubic root of 55668722 is about 381.8303249453.

The spelling of 55668722 in words is "fifty-five million, six hundred sixty-eight thousand, seven hundred twenty-two".