55103445 has 24 divisors (see below), whose sum is σ = 95927832. Its totient is φ = 29260800.

The previous prime is 55103437. The next prime is 55103449. The reversal of 55103445 is 54430155.

It can be written as a sum of positive squares in 4 ways, for example, as 3392964 + 51710481 = 1842^2 + 7191^2 .

It is not a de Polignac number, because 55103445 - 2³ = 55103437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55103449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8305 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (3996993).

Almost surely, 2^55103445 is an apocalyptic number.

It is an amenable number.

55103445 is a deficient number, since it is larger than the sum of its proper divisors (40824387).

55103445 is a wasteful number, since it uses less digits than its factorization.

55103445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333 (or 5330 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55103445 is about 7423.1694713242. The cubic root of 55103445 is about 380.5335188270.

The spelling of 55103445 in words is "fifty-five million, one hundred three thousand, four hundred forty-five".