55014821 has 2 divisors, whose sum is σ = 55014822. Its totient is φ = 55014820.

The previous prime is 55014809. The next prime is 55014829. The reversal of 55014821 is 12841055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37957921 + 17056900 = 6161^2 + 4130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55014821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55014829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27507410 + 27507411.

It is an arithmetic number, because the mean of its divisors is an integer number (27507411).

Almost surely, 2^55014821 is an apocalyptic number.

It is an amenable number.

55014821 is a deficient number, since it is larger than the sum of its proper divisors (1).

55014821 is an equidigital number, since it uses as much as digits as its factorization.

55014821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 55014821 is about 7417.1976514045. The cubic root of 55014821 is about 380.3294027406.

Adding to 55014821 its reverse (12841055), we get a palindrome (67855876).

The spelling of 55014821 in words is "fifty-five million, fourteen thousand, eight hundred twenty-one".