55620241 has 4 divisors (see below), whose sum is σ = 55644084. Its totient is φ = 55596400.

The previous prime is 55620203. The next prime is 55620263. The reversal of 55620241 is 14202655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 5267025 = 7096^2 + 2295^2 .

It is a cyclic number.

It is not a de Polignac number, because 55620241 - 2¹¹ = 55618193 is a prime.

It is a super-2 number, since 2×55620241² = 6187222417796162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55620281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7990 + ... + 13231.

It is an arithmetic number, because the mean of its divisors is an integer number (13911021).

Almost surely, 2^55620241 is an apocalyptic number.

It is an amenable number.

55620241 is a deficient number, since it is larger than the sum of its proper divisors (23843).

55620241 is a wasteful number, since it uses less digits than its factorization.

55620241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23842.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 55620241 is about 7457.8978941790. The cubic root of 55620241 is about 381.7194494440.

Adding to 55620241 its reverse (14202655), we get a palindrome (69822896).

The spelling of 55620241 in words is "fifty-five million, six hundred twenty thousand, two hundred forty-one".