55481525 has 18 divisors (see below), whose sum is σ = 75624066. Its totient is φ = 40348000.

The previous prime is 55481521. The next prime is 55481549. The reversal of 55481525 is 52518455.

It can be written as a sum of positive squares in 3 ways, for example, as 23716 + 55457809 = 154^2 + 7447^2 .

It is not a de Polignac number, because 55481525 - 2² = 55481521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55481521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6146 + ... + 12195.

It is an arithmetic number, because the mean of its divisors is an integer number (4201337).

Almost surely, 2^55481525 is an apocalyptic number.

55481525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55481525 is a deficient number, since it is larger than the sum of its proper divisors (20142541).

55481525 is a wasteful number, since it uses less digits than its factorization.

55481525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373 (or 18357 counting only the distinct ones).

The product of its digits is 40000, while the sum is 35.

The square root of 55481525 is about 7448.5921488561. The cubic root of 55481525 is about 381.4018511824.

The spelling of 55481525 in words is "fifty-five million, four hundred eighty-one thousand, five hundred twenty-five".