55304405 has 12 divisors (see below), whose sum is σ = 71864100. Its totient is φ = 40839552.

The previous prime is 55304393. The next prime is 55304419. The reversal of 55304405 is 50440355.

It can be written as a sum of positive squares in 6 ways, for example, as 7873636 + 47430769 = 2806^2 + 6887^2 .

It is not a de Polignac number, because 55304405 - 2²⁰ = 54255829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31880 + ... + 33569.

It is an arithmetic number, because the mean of its divisors is an integer number (5988675).

Almost surely, 2^55304405 is an apocalyptic number.

It is an amenable number.

55304405 is a deficient number, since it is larger than the sum of its proper divisors (16559695).

55304405 is a wasteful number, since it uses less digits than its factorization.

55304405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65480 (or 65467 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 55304405 is about 7436.6931495121. The cubic root of 55304405 is about 380.9955543096.

The spelling of 55304405 in words is "fifty-five million, three hundred four thousand, four hundred five".