55520441 has 2 divisors, whose sum is σ = 55520442. Its totient is φ = 55520440.

The previous prime is 55520401. The next prime is 55520467. The reversal of 55520441 is 14402555.

It is an a-pointer prime, because the next prime (55520467) can be obtained adding 55520441 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 92416 = 7445^2 + 304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55520441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55520441.

It is not a weakly prime, because it can be changed into another prime (55520401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27760220 + 27760221.

It is an arithmetic number, because the mean of its divisors is an integer number (27760221).

Almost surely, 2^55520441 is an apocalyptic number.

It is an amenable number.

55520441 is a deficient number, since it is larger than the sum of its proper divisors (1).

55520441 is an equidigital number, since it uses as much as digits as its factorization.

55520441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 55520441 is about 7451.2039966706. The cubic root of 55520441 is about 381.4910049771.

Adding to 55520441 its reverse (14402555), we get a palindrome (69922996).

The spelling of 55520441 in words is "fifty-five million, five hundred twenty thousand, four hundred forty-one".