122628553 has 2 divisors, whose sum is σ = 122628554. Its totient is φ = 122628552.

The previous prime is 122628547. The next prime is 122628577. The reversal of 122628553 is 355826221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67453369 + 55175184 = 8213^2 + 7428^2 .

It is a cyclic number.

It is not a de Polignac number, because 122628553 - 2⁹ = 122628041 is a prime.

It is not a weakly prime, because it can be changed into another prime (122628503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61314276 + 61314277.

It is an arithmetic number, because the mean of its divisors is an integer number (61314277).

Almost surely, 2^122628553 is an apocalyptic number.

It is an amenable number.

122628553 is a deficient number, since it is larger than the sum of its proper divisors (1).

122628553 is an equidigital number, since it uses as much as digits as its factorization.

122628553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 122628553 is about 11073.7777203626. Note that the first 4 decimals coincide. The cubic root of 122628553 is about 496.8178616205.

The spelling of 122628553 in words is "one hundred twenty-two million, six hundred twenty-eight thousand, five hundred fifty-three".