55544129 has 2 divisors, whose sum is σ = 55544130. Its totient is φ = 55544128.

The previous prime is 55544123. The next prime is 55544147. The reversal of 55544129 is 92144555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34245904 + 21298225 = 5852^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 55544129 - 2²⁴ = 38766913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55544123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27772064 + 27772065.

It is an arithmetic number, because the mean of its divisors is an integer number (27772065).

Almost surely, 2^55544129 is an apocalyptic number.

It is an amenable number.

55544129 is a deficient number, since it is larger than the sum of its proper divisors (1).

55544129 is an equidigital number, since it uses as much as digits as its factorization.

55544129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

The square root of 55544129 is about 7452.7933689322. The cubic root of 55544129 is about 381.5452521089.

The spelling of 55544129 in words is "fifty-five million, five hundred forty-four thousand, one hundred twenty-nine".