55262909 has 4 divisors (see below), whose sum is σ = 59513916. Its totient is φ = 51011904.

The previous prime is 55262861. The next prime is 55262917. The reversal of 55262909 is 90926255.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2656900 + 52606009 = 1630^2 + 7253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55262909 is a prime.

It is a super-2 number, since 2×55262909² = 6107978222284562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55262939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125484 + ... + 2125509.

It is an arithmetic number, because the mean of its divisors is an integer number (14878479).

Almost surely, 2^55262909 is an apocalyptic number.

It is an amenable number.

55262909 is a deficient number, since it is larger than the sum of its proper divisors (4251007).

55262909 is a wasteful number, since it uses less digits than its factorization.

55262909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251006.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 55262909 is about 7433.9026762529. The cubic root of 55262909 is about 380.9002409417.

The spelling of 55262909 in words is "fifty-five million, two hundred sixty-two thousand, nine hundred nine".