55755960129 has 27 divisors (see below), whose sum is σ = 83250928449. Its totient is φ = 35957419560.

The previous prime is 55755960097. The next prime is 55755960149. The reversal of 55755960129 is 92106955755.

The square root of 55755960129 is 236127.

It is a perfect power (a square), and thus also a powerful number.

55755960129 is a `hidden beast` number, since 5 + 5 + 7 + 5 + 5 + 9 + 601 + 29 = 666.

It is not a de Polignac number, because 55755960129 - 2⁵ = 55755960097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55755960149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21958542 + ... + 21961080.

Almost surely, 2^55755960129 is an apocalyptic number.

55755960129 is the 236127-th square number.

55755960129 is the 118064-th centered octagonal number.

It is an amenable number.

55755960129 is a deficient number, since it is larger than the sum of its proper divisors (27494968320).

55755960129 is an frugal number, since it uses more digits than its factorization.

55755960129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 4252500, while the sum is 54.

It can be divided in two parts, 55755960 and 129, that added together give a square (55756089 = 7467²).

The spelling of 55755960129 in words is "fifty-five billion, seven hundred fifty-five million, nine hundred sixty thousand, one hundred twenty-nine".