55257259 has 4 divisors (see below), whose sum is σ = 58507704. Its totient is φ = 52006816.

The previous prime is 55257253. The next prime is 55257269. The reversal of 55257259 is 95275255.

55257259 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.

It is a cyclic number.

It is not a de Polignac number, because 55257259 - 2⁵ = 55257227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55257253) 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, 1625197 + ... + 1625230.

It is an arithmetic number, because the mean of its divisors is an integer number (14626926).

Almost surely, 2^55257259 is an apocalyptic number.

55257259 is a deficient number, since it is larger than the sum of its proper divisors (3250445).

55257259 is a wasteful number, since it uses less digits than its factorization.

55257259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250444.

The product of its digits is 157500, while the sum is 40.

The square root of 55257259 is about 7433.5226508029. The cubic root of 55257259 is about 380.8872596024.

The spelling of 55257259 in words is "fifty-five million, two hundred fifty-seven thousand, two hundred fifty-nine".