55241623 has 2 divisors, whose sum is σ = 55241624. Its totient is φ = 55241622.

The previous prime is 55241617. The next prime is 55241663. The reversal of 55241623 is 32614255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55241623 - 2²¹ = 53144471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55241591 and 55241600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55241603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27620811 + 27620812.

It is an arithmetic number, because the mean of its divisors is an integer number (27620812).

Almost surely, 2^55241623 is an apocalyptic number.

55241623 is a deficient number, since it is larger than the sum of its proper divisors (1).

55241623 is an equidigital number, since it uses as much as digits as its factorization.

55241623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 55241623 is about 7432.4708542987. The cubic root of 55241623 is about 380.8513299941.

Adding to 55241623 its reverse (32614255), we get a palindrome (87855878).

The spelling of 55241623 in words is "fifty-five million, two hundred forty-one thousand, six hundred twenty-three".