55162513 has 4 divisors (see below), whose sum is σ = 63042880. Its totient is φ = 47282148.

The previous prime is 55162511. The next prime is 55162531. The reversal of 55162513 is 31526155.

55162513 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, and also an emirpimes, since its reverse is a distinct semiprime: 31526155 = 5 ⋅6305231.

It is a cyclic number.

It is not a de Polignac number, because 55162513 - 2¹ = 55162511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55162511) 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, 3940173 + ... + 3940186.

It is an arithmetic number, because the mean of its divisors is an integer number (15760720).

Almost surely, 2^55162513 is an apocalyptic number.

It is an amenable number.

55162513 is a deficient number, since it is larger than the sum of its proper divisors (7880367).

55162513 is an equidigital number, since it uses as much as digits as its factorization.

55162513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880366.

The product of its digits is 4500, while the sum is 28.

The square root of 55162513 is about 7427.1470296474. The cubic root of 55162513 is about 380.6694409226.

Adding to 55162513 its reverse (31526155), we get a palindrome (86688668).

The spelling of 55162513 in words is "fifty-five million, one hundred sixty-two thousand, five hundred thirteen".