55222553 has 2 divisors, whose sum is σ = 55222554. Its totient is φ = 55222552.

The previous prime is 55222549. The next prime is 55222567. The reversal of 55222553 is 35522255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54715609 + 506944 = 7397^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 55222553 - 2² = 55222549 is a prime.

It is not a weakly prime, because it can be changed into another prime (55222513) 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, 27611276 + 27611277.

It is an arithmetic number, because the mean of its divisors is an integer number (27611277).

Almost surely, 2^55222553 is an apocalyptic number.

It is an amenable number.

55222553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55222553 is an equidigital number, since it uses as much as digits as its factorization.

55222553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15000, while the sum is 29.

The square root of 55222553 is about 7431.1878592860. The cubic root of 55222553 is about 380.8075002973.

The spelling of 55222553 in words is "fifty-five million, two hundred twenty-two thousand, five hundred fifty-three".