55125817 has 4 divisors (see below), whose sum is σ = 55184976. Its totient is φ = 55066660.

The previous prime is 55125809. The next prime is 55125827. The reversal of 55125817 is 71852155.

55125817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55125817 - 2³ = 55125809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55125827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28159 + ... + 30052.

It is an arithmetic number, because the mean of its divisors is an integer number (13796244).

Almost surely, 2^55125817 is an apocalyptic number.

It is an amenable number.

55125817 is a deficient number, since it is larger than the sum of its proper divisors (59159).

55125817 is an equidigital number, since it uses as much as digits as its factorization.

55125817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59158.

The product of its digits is 14000, while the sum is 34.

The square root of 55125817 is about 7424.6762218968. The cubic root of 55125817 is about 380.5850107317.

The spelling of 55125817 in words is "fifty-five million, one hundred twenty-five thousand, eight hundred seventeen".