55449925 has 12 divisors (see below), whose sum is σ = 70056900. Its totient is φ = 43521920.

The previous prime is 55449913. The next prime is 55449929. The reversal of 55449925 is 52994455.

It can be written as a sum of positive squares in 6 ways, for example, as 1295044 + 54154881 = 1138^2 + 7359^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55449925 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55449929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19600 + ... + 22249.

It is an arithmetic number, because the mean of its divisors is an integer number (5838075).

Almost surely, 2^55449925 is an apocalyptic number.

It is an amenable number.

55449925 is a deficient number, since it is larger than the sum of its proper divisors (14606975).

55449925 is a wasteful number, since it uses less digits than its factorization.

55449925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41912 (or 41907 counting only the distinct ones).

The product of its digits is 324000, while the sum is 43.

The square root of 55449925 is about 7446.4706405115. The cubic root of 55449925 is about 381.3294271494.

The spelling of 55449925 in words is "fifty-five million, four hundred forty-nine thousand, nine hundred twenty-five".