55222549 has 2 divisors, whose sum is σ = 55222550. Its totient is φ = 55222548.

The previous prime is 55222513. The next prime is 55222553. The reversal of 55222549 is 94522255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 18861649 = 6030^2 + 4343^2 .

It is a cyclic number.

It is not a de Polignac number, because 55222549 - 2⁷ = 55222421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55222649) 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 as a sum of consecutive naturals, namely, 27611274 + 27611275.

It is an arithmetic number, because the mean of its divisors is an integer number (27611275).

Almost surely, 2^55222549 is an apocalyptic number.

It is an amenable number.

55222549 is a deficient number, since it is larger than the sum of its proper divisors (1).

55222549 is an equidigital number, since it uses as much as digits as its factorization.

55222549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 55222549 is about 7431.1875901500. The cubic root of 55222549 is about 380.8074911028.

The spelling of 55222549 in words is "fifty-five million, two hundred twenty-two thousand, five hundred forty-nine".