55443925 has 6 divisors (see below), whose sum is σ = 68750498. Its totient is φ = 44355120.

The previous prime is 55443923. The next prime is 55443959. The reversal of 55443925 is 52934455.

It can be written as a sum of positive squares in 3 ways, for example, as 669124 + 54774801 = 818^2 + 7401^2 .

It is not a de Polignac number, because 55443925 - 2¹ = 55443923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443923) 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, 1108854 + ... + 1108903.

Almost surely, 2^55443925 is an apocalyptic number.

It is an amenable number.

55443925 is a deficient number, since it is larger than the sum of its proper divisors (13306573).

55443925 is a wasteful number, since it uses less digits than its factorization.

55443925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217767 (or 2217762 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 55443925 is about 7446.0677541908. The cubic root of 55443925 is about 381.3156726428.

The spelling of 55443925 in words is "fifty-five million, four hundred forty-three thousand, nine hundred twenty-five".