55609125 has 128 divisors (see below), whose sum is σ = 116992512. Its totient is φ = 23040000.

The previous prime is 55609123. The next prime is 55609139. The reversal of 55609125 is 52190655.

It is not a de Polignac number, because 55609125 - 2¹ = 55609123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55609123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 911595 + ... + 911655.

It is an arithmetic number, because the mean of its divisors is an integer number (914004).

Almost surely, 2^55609125 is an apocalyptic number.

55609125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55609125 is an abundant number, since it is smaller than the sum of its proper divisors (61383387).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55609125 is a wasteful number, since it uses less digits than its factorization.

55609125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 55609125 is about 7457.1526067260. The cubic root of 55609125 is about 381.6940181980.

The spelling of 55609125 in words is "fifty-five million, six hundred nine thousand, one hundred twenty-five".