55043425 has 6 divisors (see below), whose sum is σ = 68253878. Its totient is φ = 44034720.

The previous prime is 55043423. The next prime is 55043447. The reversal of 55043425 is 52434055.

It can be written as a sum of positive squares in 3 ways, for example, as 179776 + 54863649 = 424^2 + 7407^2 .

It is not a de Polignac number, because 55043425 - 2¹ = 55043423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55043393 and 55043402.

It is not an unprimeable number, because it can be changed into a prime (55043423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100844 + ... + 1100893.

Almost surely, 2^55043425 is an apocalyptic number.

It is an amenable number.

55043425 is a deficient number, since it is larger than the sum of its proper divisors (13210453).

55043425 is a wasteful number, since it uses less digits than its factorization.

55043425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201747 (or 2201742 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 55043425 is about 7419.1256223358. The cubic root of 55043425 is about 380.3953065410.

The spelling of 55043425 in words is "fifty-five million, forty-three thousand, four hundred twenty-five".