55016641 has 6 divisors (see below), whose sum is σ = 58443590. Its totient is φ = 51780096.

The previous prime is 55016639. The next prime is 55016653. The reversal of 55016641 is 14661055.

It can be written as a sum of positive squares in 3 ways, for example, as 5017600 + 49999041 = 2240^2 + 7071^2 .

It is not a de Polignac number, because 55016641 - 2¹ = 55016639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55016671) 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, 94896 + ... + 95473.

Almost surely, 2^55016641 is an apocalyptic number.

It is an amenable number.

55016641 is a deficient number, since it is larger than the sum of its proper divisors (3426949).

55016641 is a wasteful number, since it uses less digits than its factorization.

55016641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190403 (or 190386 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55016641 is about 7417.3203382354. The cubic root of 55016641 is about 380.3335967127. Note that the first 3 decimals are identical.

Adding to 55016641 its reverse (14661055), we get a palindrome (69677696).

The spelling of 55016641 in words is "fifty-five million, sixteen thousand, six hundred forty-one".